List of Major League Baseball players (O)

The following is a list of Major League Baseball players, retired or active. As of the end of the 2011 season, there have been 320 players with a last name that begins with O who have been on a major league roster at some point.

List of Major League Baseball players: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

O

Name Debut Final Game Position Teams Ref
Mike O'Berry April 8, 1979 October 4, 1985 Catcher Boston Red Sox, Chicago Cubs, Cincinnati Reds, California Angels, New York Yankees, Montreal Expos [1]
Billy O'Brien September 27, 1884 October 3, 1890 First baseman St. Paul Saints, Kansas City Cowboys (UA), Washington Nationals (1886–1889), Brooklyn Gladiators [2]
Bob O'Brien April 11, 1971 July 7, 1971 Pitcher Los Angeles Dodgers [3]
Buck O'Brien September 9, 1911 August 6, 1913 Pitcher Boston Red Sox, Chicago White Sox [4]
Charlie O'Brien June 2, 1985 June 21, 2000 Catcher Oakland Athletics, Milwaukee Brewers, New York Mets, Atlanta Braves, Toronto Blue Jays, Chicago White Sox, Anaheim Angels, Montreal Expos [5]
Cinders O'Brien June 23, 1888 October 2, 1891 Pitcher Cleveland Blues (AA), Cleveland Spiders, Cleveland Infants, Boston Reds (AA) [6]
Dan O'Brien September 4, 1978 September 28, 1979 Pitcher St. Louis Cardinals [7]
Darby O'Brien April 16, 1887 October 15, 1892 Outfielder New York Metropolitans, Brooklyn Bridegrooms/Grooms [8]
Dink O'Brien April 26, 1923 September 15, 1923 Catcher Philadelphia Phillies [9]
Eddie O'Brien April 25, 1953 April 19, 1958 Shortstop Pittsburgh Pirates [10]
George O'Brien August 16, 1915 August 23, 1915 Catcher St. Louis Browns [11]
Jack O'Brien (C) May 2, 1882 September 16, 1890 Catcher Philadelphia Athletics (AA), Brooklyn Grays, Baltimore Orioles (AA) [12]
Jack O'Brien (OF) April 14, 1899 September 28, 1903 Outfielder Washington Senators (NL), Cleveland Blues (AL), Boston Americans [13]
John O'Brien (OF) April 19, 1884 May 31, 1884 Outfielder Baltimore Monumentals [14]
John O'Brien (2B) April 22, 1891 October 7, 1899 Second baseman Brooklyn Grooms, Chicago Colts, Louisville Colonels, Washington Senators (NL), Baltimore Orioles (NL), Pittsburgh Pirates [15]
Johnny O'Brien April 19, 1953 July 19, 1959 Second baseman Pittsburgh Pirates, St. Louis Cardinals, Milwaukee Braves [16]
Pete O'Brien (1890s 2B) August 2, 1887 June 16, 1890 Second baseman Washington Nationals (1886–1889), Chicago Colts [17]
Pete O'Brien (1900s 2B) September 21, 1901 October 2, 1907 Second baseman Cincinnati Reds, St. Louis Browns, Cleveland Naps, Washington Senators [18]
Pete O'Brien (1B) September 3, 1982 July 20, 1995 First baseman Texas Rangers, Cleveland Indians, Seattle Mariners [19]
Ray O'Brien June 27, 1916 July 12, 1916 Outfielder Pittsburgh Pirates [20]
Syd O'Brien April 15, 1969 October 1, 1972 Third baseman Boston Red Sox, Chicago White Sox, California Angels, Milwaukee Brewers [21]
Tom O'Brien (2B) June 14, 1882 July 28, 1890 Second baseman Worcester Ruby Legs, Baltimore Orioles (AA), Boston Reds (UA), New York Metropolitans, Rochester Broncos [22]
Tom O'Brien (OF) May 10, 1897 October 13, 1900 Outfielder Baltimore Orioles (NL), Pittsburgh Pirates, New York Giants [23]
Tommy O'Brien April 24, 1943 May 13, 1950 Outfielder Pittsburgh Pirates, Boston Red Sox, Washington Senators [24]
Danny O'Connell July 14, 1950 September 26, 1962 Second baseman Pittsburgh Pirates, Milwaukee Braves, New York/San Francisco Giants, Washington Senators (1961-1971) [25]
Jimmy O'Connell April 17, 1923 September 28, 1924 Outfielder New York Giants [26]
John O'Connell (2B) August 22, 1891 September 20, 1902 Second baseman Baltimore Orioles (AA), Detroit Tigers [27]
John O'Connell (C) August 16, 1928 October 6, 1929 Catcher Pittsburgh Pirates [28]
Pat O'Connell July 22, 1886 September 9, 1886 Outfielder Baltimore Orioles (AA) [29]
Andy O'Connor October 6, 1908 October 6, 1908 Pitcher New York Highlanders [30]
Brian O'Connor May 13, 2000 September 27, 2000 Pitcher Pittsburgh Pirates [31]
Dan O'Connor June 3, 1890 July 19, 1890 First baseman Louisville Colonels [32]
Frank O'Connor August 3, 1893 August 7, 1893 Pitcher Philadelphia Phillies [33]
Jack O'Connor (C) April 20, 1887 October 9, 1910 Catcher Cincinnati Red Stockings (AA), Columbus Solons, Cleveland Spiders, St. Louis Perfectos/Cardinals, Pittsburgh Pirates, New York Highlanders, St. Louis Browns [34]
Jack O'Connor (P) April 9, 1981 October 3, 1987 Pitcher Minnesota Twins, Montreal Expos, Baltimore Orioles [35]
Johnny O'Connor September 16, 1916 September 16, 1916 Catcher Chicago Cubs [36]
Michael O'Connor April 27, 2006 Pitcher Washington Nationals, New York Mets [37]
Paddy O'Connor April 17, 1908 July 22, 1918 Catcher Pittsburgh Pirates, St. Louis Cardinals, Pittsburgh Rebels, New York Yankees [38]
Darren O'Day March 31, 2008 Pitcher Los Angeles Angels of Anaheim, New York Mets, Texas Rangers [39]
Hank O'Day May 2, 1884 October 3, 1890 Pitcher Toledo Blue Stockings, Pittsburg Alleghenys, Washington Nationals (1886–1889), New York Giants, New York Giants (PL) [40]
Ken O'Dea April 21, 1935 August 6, 1946 Catcher Chicago Cubs, New York Giants, St. Louis Cardinals, Boston Braves [41]
Paul O'Dea April 19, 1944 September 20, 1945 Outfielder Cleveland Indians [42]
Billy O'Dell June 20, 1954 September 12, 1967 Pitcher Baltimore Orioles, San Francisco Giants, Milwaukee/Atlanta Braves, Pittsburgh Pirates [43]
George O'Donnell April 18, 1954 July 25, 1954 Pitcher Pittsburgh Pirates [44]
Harry O'Donnell April 30, 1927 September 30, 1927 Catcher Philadelphia Phillies [45]
John O'Donnell July 16, 1884 July 16, 1884 Catcher Philadelphia Keystones [46]
John O'Donoghue (1960s P) September 29, 1963 June 22, 1971 Pitcher Kansas City Athletics, Cleveland Indians, Baltimore Orioles, Seattle Pilots, Milwaukee Brewers, Montreal Expos [47]
John O'Donoghue (1990s P) June 27, 1993 October 3, 1993 Pitcher Baltimore Orioles [48]
Lefty O'Doul April 29, 1919 September 30, 1934 Outfielder New York Yankees, Boston Red Sox, New York Giants, Philadelphia Phillies, Brooklyn Robins/Dodgers [49]
Bob O'Farrell September 5, 1915 September 23, 1935 Catcher Chicago Cubs, San Francisco Giants, St. Louis Cardinals, Cincinnati Reds [50]
Eric O'Flaherty August 16, 2006 Pitcher Seattle Mariners, Atlanta Braves [51]
Hal O'Hagan September 24, 1892 July 17, 1902 First baseman Washington Senators (NL), Chicago Orphans, New York Giants, Cleveland Bronchos [52]
Greg O'Halloran May 16, 1994 August 6, 1994 Catcher Florida Marlins [53]
Bill O'Hara April 15, 1909 May 8, 1910 Outfielder New York Giants, St. Louis Cardinals [54]
Kid O'Hara September 15, 1904 September 22, 1904 Outfielder Boston Beaneaters [55]
Tom O'Hara September 19, 1906 July 4, 1907 Outfielder St. Louis Cardinals [56]
Charley O'Leary April 14, 1904 September 30, 1934 Shortstop Detroit Tigers, St. Louis Cardinals, St. Louis Browns [57]
Dan O'Leary September 3, 1879 August 6, 1884 Outfielder Providence Grays, Boston Red Caps, Detroit Wolverines, Worcester Ruby Legs, Cincinnati Outlaw Reds [58]
Troy O'Leary May 9, 1993 September 28, 2003 Outfielder Milwaukee Brewers, Boston Red Sox, Montreal Expos, Chicago Cubs [59]
Ryan O'Malley August 16, 2006 August 22, 2006 Pitcher Chicago Cubs [60]
Tom O'Malley May 8, 1982 October 3, 1990 Third baseman Sand Francisco Giants, Chicago White Sox, Baltimore Orioles, Texas Rangers, Montreal Expos, New York Mets [61]
Ollie O'Mara September 8, 1912 April 19, 1919 Shortstop Detroit Tigers, Brooklyn Robins [62]
Tom O'Meara September 29, 1895 July 22, 1896 Catcher Cleveland Spiders [63]
Randy O'Neal September 12, 1984 October 2, 1990 Pitcher Detroit Tigers, Atlanta Braves, St. Louis Cardinals, Philadelphia Phillies, San Francisco Giants [64]
Skinny O'Neal April 18, 1925 May 27, 1927 Pitcher Philadelphia Phillies [65]
Denny O'Neil June 18, 1893 July 26, 1893 First baseman St. Louis Browns (NL) [66]
Ed O'Neil June 20, 1890 October 12, 1890 Pitcher Toledo Maumees, Philadelphia Athletics (AA) [67]
Fancy O'Neil October 23, 1874 October 23, 1874 Right fielder Hartford Dark Blues [68]
Hugh O'Neil August 20, 1875 October 9, 1875 Utility player Brooklyn Atlantics [69]
John O'Neil April 16, 1946 September 29, 1946 Shortstop Philadelphia Phillies [70]
Mickey O'Neil September 12, 1919 June 19, 1927 Catcher Boston Braves, Brooklyn Robins, Washington Senators, New York Giants [71]
Bill O'Neill May 7, 1904 October 7, 1906 Outfielder Boston Americans, Washington Senators, Chicago White Sox [72]
Emmett O'Neill August 3, 1943 June 5, 1946 Pitcher Boston Red Sox, Chicago Cubs, Chicago White Sox [73]
Fred O'Neill May 3, 1887 May 22, 1887 Outfielder New York Metropolitans [74]
Harry O'Neill (P) September 15, 1922 May 28, 1923 Pitcher Philadelphia Athletics [75]
Harry O'Neill (C) July 23, 1939 July 23, 1939 Catcher Philadelphia Athletics [76]
Jack O'Neill April 21, 1902 October 3, 1906 Catcher St. Louis Cardinals, Chicago Cubs, Boston Beaneaters [77]
Jim O'Neill April 15, 1920 July 29, 1923 Shortstop Washington Senators [78]
John O'Neill September 6, 1899 September 5, 1902 Catcher New York Giants [79]
Mike O'Neill September 20, 1901 October 6, 1907 Pitcher St. Louis Cardinals [80]
Paul O'Neill September 3, 1985 October 7, 2001 Outfielder Cincinnati Reds, New York Yankees [81]
Peaches O'Neill April 16, 1904 August 4, 1904 Catcher Cincinnati Reds [82]
Steve O'Neill September 18, 1911 September 14, 1928 Catcher Cleveland Naps/Indians, Boston Red Sox, New York Yankees, St. Louis Browns [83]
Tip O'Neill May 5, 1883 August 30, 1892 Outfielder New York Gothams, St. Louis Browns (AA), Chicago Pirates, Cincinnati Reds [84]
Don O'Riley June 20, 1969 August 1, 1970 Pitcher Kansas City Royals [85]
O'Rourke, first name unknown July 9, 1872 July 9, 1872 Pitcher Eckford of Brooklyn [86]
Charlie O'Rourke June 16, 1959 June 16, 1959 Pinch hitter St. Louis Cardinals [87]
Frank O'Rourke June 12, 1912 July 28, 1931 Third baseman Boston Braves, Brooklyn Robins, Washington Senators, Boston Red Sox, Detroit Tigers, St. Louis Browns [88]
Jim O'Rourke β April 26, 1872 September 22, 1904 Outfielder Middletown Mansfields, Boston Red Stockings/Red Caps, Providence Grays, Buffalo Bisons (NL), New York Giants, New York Giants (PL), Washington Senators (NL) [89]
Joe O'Rourke April 19, 1929 June 5, 1929 Pinch hitter Philadelphia Phillies [90]
John O'Rourke May 1, 1879 September 10, 1883 Outfielder Boston Red Caps, New York Metropolitans [91]
Mike O'Rourke September 1, 1890 October 15, 1890 Pitcher Baltimore Orioles (AA) [92]
Patsy O'Rourke April 16, 1908 July 12, 1908 Shortstop St. Louis Cardinals [93]
Queenie O'Rourke August 15, 1908 October 8, 1908 Utility player New York Highlanders [94]
Tim O'Rourke May 27, 1890 August 7, 1894 Utility player Syracuse Stars (AA), Columbus Solons, Baltimore Orioles (NL), Louisville Colonels, St. Louis Browns (NL), Washington Senators (NL) [95]
Tom O'Rourke May 11, 1887 August 1, 1890 Catcher Boston Beaneaters, New York Giants, Syracuse Stars (AA) [96]
Sean O'Sullivan June 16, 2009 Pitcher Los Angeles Angels of Anaheim, Kansas City Royals [97]
Dennis O'Toole September 8, 1969 June 23, 1973 Pitcher Chicago White Sox [98]
Jim O'Toole September 26, 1958 July 22, 1967 Pitcher Cincinnati Redlegs/Reds, Chicago White Sox [99]
Marty O'Toole September 21, 1908 October 6, 1914 Pitcher Cincinnati Reds, Pittsburgh Pirates, New York Giants [100]
Rebel Oakes April 14, 1909 October 3, 1915 Outfielder Cincinnati Reds, St. Louis Cardinals, Pittsburgh Rebels [101]
Prince Oana April 22, 1934 September 18, 1945 Pitcher Philadelphia Phillies, Detroit Tigers [102]
Johnny Oates September 17, 1970 May 24, 1981 Catcher Baltimore Orioles, Atlanta Braves, Philadelphia Phillies, Los Angeles Dodgers, New York Yankees [103]
Sherman Obando April 10, 1993 July 21, 1997 Outfielder Baltimore Orioles, Montreal Expos [104]
Henry Oberbeck May 7, 1883 October 18, 1884 Outfielder Pittsburg Alleghenys, St. Louis Browns (AA), Baltimore Monumentals, Kansas City Cowboys (UA) [105]
Ken Oberkfell August 22, 1977 October 4, 1992 Third baseman St. Louis Cardinals, Atlanta Braves, Pittsburgh Pirates, San Francisco Giants, Houston Astros, California Angels [106]
Doc Oberlander May 16, 1888 June 2, 1888 Pitcher Cleveland Blues (AA) [107]
Frank Oberlin September 20, 1906 June 28, 1910 Pitcher Boston Red Sox, Washington Senators [108]
Wes Obermueller September 20, 2002 July 13, 2007 Pitcher Kansas City Royals, Milwaukee Brewers, Florida Marlins [109]
Jim Obradovich September 12, 1978 September 29, 1978 First baseman Houston Astros [110]
Alex Ochoa September 18, 1995 September 29, 2002 Outfielder New York Mets, Minnesota Twins, Milwaukee Brewers, Cincinnati Reds, Colorado Rockies, Anaheim Angels [111]
Iván Ochoa July 12, 2008 Shortstop San Francisco Giants [112]
Whitey Ock September 29, 1935 September 29, 1935 Catcher Brooklyn Dodgers [113]
Walter Ockey May 3, 1944 May 20, 1944 Pitcher New York Giants [114]
Ted Odenwald April 13, 1921 April 21, 1922 Pitcher Cleveland Indians [115]
Blue Moon Odom September 5, 1964 August 17, 1976 Pitcher Kansas City/Oakland Athletics, Cleveland Indians, Atlanta Braves, Chicago White Sox [116]
Dave Odom May 31, 1943 September 13, 1943 Pitcher Boston Braves [117]
Heinie Odom April 22, 1925 April 22, 1925 Third baseman New York Yankees [118]
Fred Odwell April 16, 1904 September 12, 1907 Outfielder Cincinnati Reds [119]
Bryan Oelkers April 9, 1983 October 3, 1986 Pitcher Minnesota Twins, Cleveland Indians [120]
Trent Oeltjen August 6, 2009 Outfielder Arizona Diamondbacks, Los Angeles Dodgers [121]
Chuck Oertel September 1, 1958 September 26, 1958 Outfielder Baltimore Orioles [122]
Joe Oeschger April 21, 1914 September 6, 1925 Pitcher Philadelphia Phillies, New York Giants, Boston Braves, Philadelphia Phillies, Brooklyn Robins [123]
Ron Oester September 10, 1978 October 3, 1990 Second baseman Cincinnati Reds [124]
José Offerman August 19, 1990 October 2, 2005 Utility infielder Los Angeles Dodgers, Kansas City Royals, Boston Red Sox, Seattle Mariners, Minnesota Twins, Philadelphia Phillies, New York Mets [125]
Rowland Office August 5, 1972 April 20, 1983 Outfielder Atlanta Braves, Montreal Expos, New York Yankees [126]
Alexi Ogando June 15, 2010 Pitcher Texas Rangers [127]
Curly Ogden July 18, 1922 July 21, 1926 Pitcher Philadelphia Athletics, Washington Senators [128]
Jack Ogden June 22, 1918 September 9, 1932 Pitcher New York Giants, St. Louis Browns, Cincinnati Reds [129]
Chad Ogea May 3, 1994 October 2, 1999 Pitcher Cleveland Indians, Philadelphia Phillies [130]
Jim Oglesby April 14, 1936 April 17, 1936 First baseman Philadelphia Athletics [131]
Ben Oglivie September 4, 1971 October 5, 1986 Outfielder Boston Red Sox, Detroit Tigers, Milwaukee Brewers [132]
Bruce Ogrodowski April 14, 1936 October 3, 1937 Catcher St. Louis Cardinals [133]
Joe Ogrodowski April 27, 1925 April 27, 1925 Pitcher Boston Braves [134]
Tomo Ohka July 19, 1999 Pitcher Boston Red Sox, Montreal Expos, Washington Nationals, Milwaukee Brewers, Toronto Blue Jays, Cleveland Indians [135]
Joe Ohl July 29, 1909 August 5, 1909 Pitcher Washington Senators [136]
Ross Ohlendorf September 11, 2007 Pitcher New York Yankees, Pittsburgh Pirates [137]
Will Ohman September 19, 2000 Pitcher Chicago Cubs, Atlanta Braves, Los Angeles Dodgers, Baltimore Orioles, Florida Marlins, Chicago White Sox [138]
Kevin Ohme April 14, 2003 April 15, 2003 Pitcher St. Louis Cardinals [139]
Kirt Ojala August 18, 1997 May 4, 1999 Pitcher Florida Marlins [140]
Augie Ojeda June 4, 2000 Utility infielder Chicago Cubs, Minnesota Twins, Arizona Diamondbacks [141]
Bob Ojeda July 13, 1980 April 22, 1994 Pitcher Boston Red Sox, New York Mets, Los Angeles Dodgers, Cleveland Indians, New York Yankees [142]
Miguel Ojeda May 17, 2003 October 1, 2006 Catcher San Diego Padres, Seattle Mariners, Colorado Rockies, Texas Rangers [143]
Hideki Okajima April 2, 2007 Pitcher Boston Red Sox [144]
Frank Okrie April 20, 1920 August 4, 1920 Pitcher Detroit Tigers [145]
Len Okrie June 16, 1948 April 16, 1952 Catcher Washington Senators, Boston Red Sox [146]
Jim Olander September 20, 1991 October 5, 1991 Outfielder Milwaukee Brewers [147]
Dave Oldfield June 28, 1883 October 11, 1886 Catcher Baltimore Orioles (AA), Brooklyn Grays, Washington Nationals (1886–1889) [148]
John Oldham September 2, 1956 September 2, 1956 Pinch runner Cincinnati Redlegs [149]
Red Oldham August 19, 1914 July 8, 1926 Pitcher Detroit Tigers, Pittsburgh Pirates [150]
Bob Oldis April 28, 1953 September 29, 1963 Catcher Washington Senators, Pittsburgh Pirates, Philadelphia Phillies [151]
Rube Oldring October 2, 1905 August 30, 1918 Outfielder New York Highlanders/Yankees, Philadelphia Athletics [152]
John Olerud September 3, 1989 October 2, 2005 First baseman Toronto Blue Jays, New York Mets, Seattle Mariners, New York Yankees, Boston Red Sox [153]
Frank Olin July 4, 1884 June 10, 1885 Outfielder Washington Nationals (AA), Washington Nationals (UA), Toledo Blue Stockings, Detroit Wolverines [154]
Steve Olin July 29, 1989 October 4, 1992 Pitcher Cleveland Indians [155]
José Oliva July 1, 1994 October 1, 1995 Third baseman Atlanta Braves, St. Louis Cardinals [156]
Tony Oliva September 9, 1962 September 29, 1976 Outfielder Minnesota Twins [157]
Ed Olivares September 16, 1960 September 26, 1961 Outfielder St. Louis Cardinals [158]
Omar Olivares August 18, 1990 September 28, 2001 Pitcher St. Louis Cardinals, Colorado Rockies, Philadelphia Phillies, Detroit Tigers, Seattle Mariners, Anaheim Angels, Oakland Athletics, Pirates [159]
Al Oliver September 23, 1968 October 5, 1985 Outfielder Pittsburgh Pirates, Texas Rangers, Montreal Expos, San Francisco Giants, Philadelphia Phillies, Los Angeles Dodgers, Toronto Blue Jays [160]
Andrew Oliver June 25, 2010 Pitcher Detroit Tigers [161]
Bob Oliver September 10, 1965 July 3, 1975 First baseman Pittsburgh Pirates, Kansas City Royals, California Angels, Baltimore Orioles, New York Yankees [162]
Darren Oliver September 1, 1993 Pitcher Texas Rangers, St. Louis Cardinals, Boston Red Sox, Colorado Rockies, Florida Marlins, Houston Astros, New York Mets, Los Angeles Angels of Anaheim [163]
Dave Oliver September 25, 1977 October 2, 1977 Second baseman Cleveland Indians [164]
Gene Oliver June 6, 1959 August 24, 1969 Utility player St. Louis Cardinals, Milwaukee/Atlanta Braves, Philadelphia Phillies, Boston Red Sox, Chicago Cubs [165]
Joe Oliver July 15, 1989 October 6, 2001 Catcher Cincinnati Reds, Milwaukee Brewers, Detroit Tigers, Seattle Mariners, New York Yankees, Boston Red Sox [166]
Nate Oliver April 9, 1963 September 27, 1969 Second baseman Los Angeles Dodgers, San Francisco Giants, New York Yankees, Chicago Cubs [167]
Tom Oliver April 14, 1930 September 23, 1933 Outfielder Boston Red Sox [168]
Francisco Oliveras May 3, 1989 October 3, 1992 Pitcher Minnesota Twins, San Francisco Giants [169]
Lester Oliveros July 1, 2011 Pitcher Detroit Tigers, Minnesota Twins [170]
Chi-Chi Olivo June 5, 1961 October 1, 1966 Pitcher Milwaukee/Atlanta Braves [171]
Diomedes Olivo September 5, 1960 June 12, 1963 Pitcher Pittsburgh Pirates, St. Louis Cardinals [172]
Miguel Olivo September 15, 2002 Catcher Chicago White Sox, Seattle Mariners, San Diego Padres, Florida Marlins, Kansas City Royals, Colorado Rockies, Seattle Mariners [173]
Jim Ollom September 3, 1966 September 15, 1967 Pitcher Minnesota Twins [174]
Ray Olmedo May 25, 2003 Shortstop Cincinnati Reds, Toronto Blue Jays [175]
Luis Olmo July 23, 1943 June 6, 1951 Outfielder Brooklyn Dodgers, Boston Braves [176]
Fred Olmstead July 2, 1908 September 4, 1911 Pitcher Chicago White Sox [177]
Al Olmsted September 12, 1980 October 3, 1980 Pitcher St. Louis Cardinals [178]
Hank Olmsted July 15, 1905 July 26, 1905 Pitcher Boston Americans [179]
Barney Olsen April 17, 1941 September 28, 1941 Outfielder Chicago Cubs [180]
Kevin Olsen September 7, 2001 September 27, 2003 Pitcher Florida Marlins [181]
Ole Olsen April 12, 1922 September 24, 1923 Pitcher Detroit Tigers [182]
Scott Olsen June 25, 2005 Pitcher Florida Marlins, Washington Nationals [183]
Vern Olsen September 8, 1939 September 13, 1946 Pitcher Chicago Cubs [184]
Garrett Olson July 4, 2007 Pitcher Baltimore Orioles, Seattle Mariners, Pittsburgh Pirates [185]
Greg Olson June 27, 1989 September 30, 1993 Catcher Minnesota Twins, Atlanta Braves [186]
Gregg Olson September 2, 1988 June 22, 2001 Pitcher Baltimore Orioles, Atlanta Braves, Cleveland Indians, Kansas City Royals, Detroit Tigers, Houston Astros, Minnesota Twins, Arizona Diamondbacks, Los Angeles Dodgers [187]
Ivy Olson April 12, 1911 July 21, 1924 Shortstop Cleveland Naps, Cincinnati Reds, Brooklyn Robins [188]
Karl Olson June 30, 1951 June 10, 1957 Outfielder Boston Red Sox, Washington Senators, Detroit Tigers [189]
Marv Olson September 13, 1931 April 30, 1933 Second baseman Boston Red Sox [190]
Ted Olson June 21, 1936 September 13, 1938 Pitcher Boston Red Sox [191]
Tim Olson May 30, 2004 June 19, 2005 Utility infielder Arizona Diamondbacks, Colorado Rockies [192]
Ed Olwine June 2, 1986 October 2, 1988 Pitcher Atlanta Braves [193]
Logan Ondrusek April 5, 2010 Pitcher Cincinnati Reds [194]
Ralph Onis April 27, 1935 April 27, 1935 Catcher Brooklyn Dodgers [195]
Eddie Onslow August 7, 1912 September 14, 1927 First baseman Detroit Tigers, Cleveland Indians, Washington Senators [196]
Jack Onslow May 2, 1912 October 3, 1917 Catcher Detroit Tigers, New York Giants [197]
Steve Ontiveros (IF) August 5, 1973 June 21, 1980 Third baseman San Francisco Giants, Chicago Cubs [198]
Steve Ontiveros (P) June 14, 1985 October 1, 2000 Pitcher Oakland Athletics, Philadelphia Phillies, Seattle Mariners, Boston Red Sox [199]
José Oquendo May 2, 1983 September 29, 1995 Second baseman New York Mets, St. Louis Cardinals [200]
Mike Oquist August 14, 1993 September 21, 1999 Pitcher Baltimore Orioles, San Diego Padres, Oakland Athletics [201]
Tom Oran May 4, 1875 July 4, 1875 Outfielder St. Louis Red Stockings [202]
Ernie Oravetz April 11, 1955 September 30, 1956 Outfielder Washington Senators [203]
Luis Ordaz September 3, 1997 April 3, 2006 Shortstop St. Louis Cardinals, Kansas City Royals, Tampa Bay Devil Rays [204]
Tony Ordeñana October 3, 1943 October 3, 1943 Shortstop Pittsburgh Pirates [205]
Magglio Ordóñez August 29, 1997 Outfielder Chicago White Sox, Detroit Tigers [206]
Rey Ordóñez April 1, 1996 July 17, 2004 Shortstop New York Mets, Tampa Bay Devil Rays, Chicago Cubs [207]
Joe Orengo April 18, 1939 September 25, 1945 Utility infielder St. Louis Cardinals, New York Giants, Brooklyn Dodgers, Detroit Tigers, Chicago White Sox [208]
Kevin Orie April 1, 1997 September 26, 2002 Third baseman Chicago Cubs, Florida Marlins [209]
George Orme September 14, 1920 September 17, 1920 Outfielder Boston Red Sox [210]
Jess Orndorff April 18, 1907 April 24, 1907 Catcher Boston Doves [211]
Eddie Oropesa April 2, 2001 May 20, 2004 Pitcher Philadelphia Phillies, Arizona Diamondbacks, San Diego Padres [212]
Jesse Orosco April 5, 1979 September 27, 2003 Pitcher New York Mets, Los Angeles Dodgers, Cleveland Indians, Milwaukee Brewers, Baltimore Orioles, St. Louis Cardinals, San Diego Padres, New York Yankees, Minnesota Twins [213]
Billy Orr May 3, 1913 May 22, 1914 Shortstop Philadelphia Athletics [214]
Dave Orr May 17, 1883 October 2, 1890 First baseman New York Metropolitans, New York Gothams, Brooklyn Bridegrooms, Columbus Solons, Brooklyn Ward's Wonders [215]
Pete Orr April 5, 2005 Utility infielder Atlanta Braves, Washington Nationals, Philadelphia Phillies [216]
Joe Orrell August 12, 1943 August 6, 1945 Pitcher Detroit Tigers [217]
Ernie Orsatti September 4, 1927 September 28, 1935 Outfielder St. Louis Cardinals [218]
John Orsino July 14, 1961 September 10, 1967 Catcher San Francisco Giants, Baltimore Orioles, Washington Senators (1961–1971) [219]
Joe Orsulak September 1, 1983 September 25, 1997 Outfielder Pittsburgh Pirates, Baltimore Orioles, New York Mets, Florida Marlins, Montreal Expos [220]
Jorge Orta April 15, 1972 June 10, 1987 Second baseman Chicago White Sox, Cleveland Indians, Los Angeles Dodgers, Toronto Blue Jays, Kansas City Royals [221]
Anthony Ortega April 25, 2009 Pitcher Los Angeles Angels of Anaheim [222]
Bill Ortega September 7, 2001 September 28, 2001 Pinch hitter St. Louis Cardinals [223]
Phil Ortega September 10, 1960 May 4, 1969 Pitcher Los Angeles Dodgers, Washington Senators (1961–1971), California Angels [224]
Frank Ortenzio September 9, 1973 September 30, 1973 First baseman Kansas City Royals [225]
Al Orth August 15, 1895 September 20, 1909 Pitcher Philadelphia Phillies, Washington Senators, New York Highlanders [226]
Baby Ortiz September 23, 1944 September 27, 1944 Pitcher Washington Senators [227]
David Ortiz September 2, 1997 Designated hitter Minnesota Twins, Boston Red Sox [228]
Héctor Ortiz September 14, 1998 May 15, 2002 Catcher Kansas City Royals, Texas Rangers [229]
Javier Ortiz June 15, 1990 October 6, 1991 Outfielder Houston Astros [230]
José Ortiz (OF) September 4, 1969 June 16, 1971 Outfielder Chicago White Sox, Chicago Cubs [231]
José Ortiz (2B) September 15, 2000 September 27, 2002 Second baseman Oakland Athletics, Colorado Rockies [232]
Junior Ortiz September 20, 1982 August 8, 1994 Catcher Pittsburgh Pirates, New York Mets, Minnesota Twins, Cleveland Indians, Texas Rangers [233]
Luis Ortiz August 31, 1993 September 28, 1996 Third baseman Boston Red Sox, Texas Rangers [234]
Ramón Ortiz August 19, 1999 Pitcher Anaheim Angels, Cincinnati Reds, Washington Nationals, Minnesota Twins, Colorado Rockies, Los Angeles Dodgers, Chicago Cubs [235]
Roberto Ortiz September 6, 1941 September 2, 1950 Outfielder Washington Senators, Philadelphia Athletics [236]
Russ Ortiz April 2, 1998 Pitcher San Francisco Giants, Atlanta Braves, Arizona Diamondbacks, Baltimore Orioles, Houston Astros, Los Angeles Dodgers [237]
Daniel Ortmeier September 5, 2005 Outfielder San Francisco Giants [238]
John Orton August 20, 1989 July 4, 1993 Catcher California Angels [239]
Chad Orvella May 31, 2005 Pitcher Tampa Bay Devil Rays [240]
Ossie Orwoll April 13, 1928 August 21, 1929 Utility player Philadelphia Athletics [241]
Bob Osborn September 16, 1925 September 24, 1931 Pitcher Chicago Cubs, Pittsburgh Pirates [242]
Fred Osborn June 8, 1907 July 24, 1909 Outfielder Philadelphia Phillies [243]
Ozzie Osborn April 26, 1975 September 23, 1975 Pitcher Chicago White Sox [244]
Bobo Osborne June 27, 1957 September 24, 1963 First baseman Detroit Tigers, Washington Senators (1961–1971) [245]
Donovan Osborne April 9, 1992 May 15, 2004 Pitcher St. Louis Cardinals, Chicago Cubs, New York Yankees [246]
Fred Osborne July 14, 1890 September 1, 1890 Outfielder Pittsburg Alleghenys [247]
Tiny Osborne April 15, 1922 September 28, 1925 Pitcher Chicago Cubs, Brooklyn Robins [248]
Wayne Osborne April 18, 1935 May 6, 1936 Pitcher Pittsburgh Pirates, Boston Bees [249]
Pat Osburn April 13, 1974 September 22, 1975 Pitcher Cincinnati Reds, Milwaukee Brewers [250]
Charlie Osgood June 18, 1944 June 18, 1944 Pitcher Brooklyn Dodgers [251]
Keith Osik April 5, 1996 October 1, 2005 Catcher Pittsburgh Pirates, Milwaukee Brewers, Baltimore Orioles, Washington Nationals [252]
Dan Osinski April 11, 1962 April 16, 1970 Pitcher Kansas City Athletics, Los Angeles Angels, Milwaukee Braves, Boston Red Sox, Chicago White Sox, Houston Astros [253]
Franquelis Osoria June 7, 2005 July 30, 2008 Pitcher Los Angeles Dodgers, Pittsburgh Pirates [254]
Harry Ostdiek September 10, 1904 October 7, 1908 Catcher Cleveland Naps, Boston Red Sox [255]
Champ Osteen September 18, 1903 May 3, 1909 Shortstop Washington Senators, New York Yankees, St. Louis Cardinals [256]
Claude Osteen July 6, 1957 September 27, 1975 Pitcher Cincinnati Redlegs/Reds, Washington Senators (1961–1971), Los Angeles Dodgers, Houston Astros, St. Louis Cardinals, Chicago White Sox [257]
Darrell Osteen September 2, 1965 July 19, 1970 Pitcher Cincinnati Reds, Oakland Athletics [258]
Fred Ostendorf July 16, 1914 July 16, 1914 Pitcher Indianapolis Hoosiers (FL) [259]
Bill Oster August 23, 1954 September 20, 1954 Pitcher Philadelphia Athletics [260]
Red Ostergard June 14, 1921 August 17, 1921 Pinch hitter Chicago White Sox [261]
Charlie Osterhout June 23, 1879 September 6, 1879 Catcher/Outfielder Syracuse Stars (NL) [262]
Fritz Ostermueller April 21, 1934 September 30, 1948 Pitcher Boston Red Sox, St. Louis Browns, Brooklyn Dodgers, Pittsburgh Pirates [263]
Jimmy Osting May 2, 2001 August 27, 2002 Pitcher San Diego Padres, Milwaukee Brewers [264]
Brian Ostrosser August 5, 1973 August 13, 1973 Shortstop New York Mets [265]
Joe Ostrowski July 18, 1948 August 20, 1952 Pitcher St. Louis Browns, New York Yankees [266]
Johnny Ostrowski September 24, 1943 October 1, 1950 Outfielder Chicago Cubs, Boston Red Sox, Chicago White Sox, Washington Senators [267]
Al Osuna September 2, 1990 September 27, 1996 Pitcher Houston Astros, Los Angeles Dodgers, San Diego Padres [268]
Antonio Osuna April 25, 1995 April 10, 2005 Pitcher Los Angeles Dodgers, Chicago White Sox, New York Yankees, San Diego Padres, Washington Nationals [269]
Roy Oswalt May 6, 2001 Pitcher Houston Astros, Philadelphia Phillies [270]
Willis Otáñez August 25, 1998 October 3, 1999 Third baseman Baltimore Orioles, Toronto Blue Jays [271]
Reggie Otero September 2, 1945 September 29, 1945 First baseman Chicago Cubs [272]
Ricky Otero April 26, 1995 August 17, 1997 Outfielder New York Mets, Philadelphia Phillies [273]
Bill Otey September 27, 1907 June 24, 1911 Pitcher Pittsburgh Pirates, Washington Senators [274]
Amos Otis September 6, 1967 August 5, 1984 Outfielder New York Mets, Kansas City Royals, Pittsburgh Pirates [275]
Bill Otis July 4, 1912 July 6, 1912 Outfielder New York Highlanders [276]
Harry Otis September 5, 1909 September 29, 1909 Pitcher Cleveland Naps [277]
Akinori Otsuka April 6, 2004 July 1, 2007 Pitcher San Diego Padres, Texas Rangers [278]
Billy Ott September 4, 1962 July 14, 1964 Outfielder Chicago Cubs [279]
Ed Ott June 10, 1974 October 2, 1981 Catcher Pittsburgh Pirates, California Angels [280]
Mel Ott β April 27, 1926 July 11, 1947 Outfielder New York Giants [281]
Adam Ottavino May 29, 2010 Pitcher St. Louis Cardinals [282]
Jim Otten July 31, 1974 September 30, 1981 Pitcher Chicago White Sox, St. Louis Cardinals [283]
John Otten July 5, 1895 September 28, 1895 Catcher St. Louis Browns (NL) [284]
Billy Otterson September 4, 1887 October 10, 1887 Shortstop Brooklyn Grays [285]
Dave Otto September 8, 1987 August 10, 1994 Pitcher Oakland Athletics, Cleveland Indians, Pittsburgh Pirates, Chicago Cubs [286]
Phil Ouellette September 10, 1986 October 3, 1986 Catcher San Francisco Giants [287]
Johnny Oulliber July 25, 1933 October 1, 1933 Outfielder Cleveland Indians [288]
Chink Outen April 16, 1933 October 1, 1933 Catcher Brooklyn Dodgers [289]
Jimmy Outlaw April 20, 1937 May 8, 1949 Outfielder Cincinnati Reds, Boston Bees, Detroit Tigers [290]
Josh Outman September 2, 2008 Pitcher Oakland Athletics [291]
Orval Overall April 16, 1905 July 29, 1913 Pitcher Cincinnati Reds, Chicago Cubs [292]
Lyle Overbay September 19, 2001 First baseman Arizona Diamondbacks, Milwaukee Brewers, Toronto Blue Jays, Pittsburgh Pirates [293]
Stubby Overmire April 25, 1943 August 3, 1952 Pitcher Detroit Tigers, St. Louis Browns, New York Yankees [294]
Mike Overy August 14, 1976 September 9, 1976 Pitcher California Angels [295]
Ernie Ovitz June 22, 1911 June 22, 1911 Pitcher Chicago Cubs [296]
Bob Owchinko September 25, 1976 October 1, 1986 Pitcher San Diego Padres, Cleveland Indians, Oakland Athletics, Pittsburgh Pirates, Cincinnati Reds, Montreal Expos [297]
Dave Owen September 6, 1983 October 2, 1988 Shortstop Chicago Cubs, Kansas City Royals [298]
Frank Owen April 29, 1901 May 12, 1909 Pitcher Detroit Tigers, Chicago White Sox [299]
Larry Owen August 14, 1981 September 25, 1988 Catcher Atlanta Braves, Kansas City Royals [300]
Marv Owen April 16, 1931 August 2, 1940 Third baseman Detroit Tigers, Chicago White Sox, Boston Red Sox [301]
Mickey Owen May 2, 1937 September 11, 1954 Catcher St. Louis Cardinals, Brooklyn Dodgers, Chicago Cubs, Boston Red Sox [302]
Spike Owen June 25, 1983 October 2, 1995 Shortstop Seattle Mariners, Boston Red Sox, Montreal Expos, New York Yankees, California Angels [303]
Eric Owens June 6, 1995 September 27, 2003 Outfielder Cincinnati Reds, Milwaukee Brewers, San Diego Padres, Florida Marlins, Anaheim Angels [304]
Henry Owens July 7, 2006 Pitcher New York Mets, Florida Marlins [305]
Jack Owens September 21, 1935 September 22, 1935 Catcher Philadelphia Athletics [306]
Jayhawk Owens June 6, 1993 September 28, 1996 Catcher Colorado Rockies [307]
Jerry Owens September 11, 2006 Outfielder Chicago White Sox [308]
Jim Owens April 19, 1955 June 20, 1967 Pitcher Philadelphia Phillies, Cincinnati Reds, Houston Colt .45s/Astros [309]
Red Owens July 28, 1899 May 31, 1905 Second baseman Philadelphia Phillies, Brooklyn Superbas [310]
Yip Owens September 11, 1905 October 3, 1915 Catcher Boston Americans, Chicago White Sox, Brooklyn Tip-Tops, Baltimore Terrapins [311]
Micah Owings April 6, 2007 Pitcher Arizona Diamondbacks, Cincinnati Reds [312]
Rick Ownbey August 17, 1982 July 3, 1986 Pitcher New York Mets, St. Louis Cardinals [313]
Henry Oxley July 30, 1884 October 10, 1884 Catcher New York Gothams, New York Metropolitans [314]
Chris Oxspring September 2, 2005 September 17, 2005 Pitcher San Diego Padres [315]
Andy Oyler May 8, 1902 July 21, 1902 Third baseman Baltimore Orioles (1901-1902) [316]
Ray Oyler April 18, 1965 October 1, 1970 Shortstop Detroit Tigers, Seattle Pilots, California Angels [317]
Doc Ozmer May 11, 1923 May 11, 1923 Pitcher Philadelphia Athletics [318]
Pablo Ozuna April 23, 2000 Utility player Florida Marlins, Colorado Rockies, Chicago White Sox, Los Angeles Dodgers [319]

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  135. ^ "Tomo Ohka Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ohkato01.shtml. Retrieved 2009-07-27. 
  136. ^ "Joe Ohl Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ohljo01.shtml. Retrieved 2009-07-27. 
  137. ^ "Ross Ohlendorf Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ohlenro01.shtml. Retrieved 2009-07-27. 
  138. ^ "Will Ohman Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ohmanwi01.shtml. Retrieved 2009-07-27. 
  139. ^ "Kevin Ohme Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ohmeke01.shtml. Retrieved 2009-07-27. 
  140. ^ "Kirt Ojala Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ojalaki01.shtml. Retrieved 2009-07-28. 
  141. ^ "Augie Ojeda Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ojedaau01.shtml. Retrieved 2009-07-28. 
  142. ^ "Bob Ojeda Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ojedabo01.shtml. Retrieved 2009-07-28. 
  143. ^ "Miguel Ojeda Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ojedami01.shtml. Retrieved 2009-07-28. 
  144. ^ "Hideki Okajima Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/okajihi01.shtml. Retrieved 2009-07-28. 
  145. ^ "Frank Okrie Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/okriefr01.shtml. Retrieved 2009-07-28. 
  146. ^ "Len Okrie Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/okriele01.shtml. Retrieved 2009-07-28. 
  147. ^ "Jim Olander Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olandji01.shtml. Retrieved 2009-07-28. 
  148. ^ "Dave Oldfield Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oldfida01.shtml. Retrieved 2009-07-28. 
  149. ^ "John Oldham Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oldhajo01.shtml. Retrieved 2009-07-28. 
  150. ^ "Red Oldham Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oldhare01.shtml. Retrieved 2009-07-28. 
  151. ^ "Bob Oldis Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oldisbo01.shtml. Retrieved 2009-07-28. 
  152. ^ "Rube Oldring Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oldriru01.shtml. Retrieved 2009-07-28. 
  153. ^ "John Olerud Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olerujo01.shtml. Retrieved 2009-07-28. 
  154. ^ "Frank Olin Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olinfr01.shtml. Retrieved 2009-07-29. 
  155. ^ "Steve Olin Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olinst01.shtml. Retrieved 2009-07-29. 
  156. ^ "José Oliva Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivajo01.shtml. Retrieved 2009-07-29. 
  157. ^ "Tony Oliva Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivato01.shtml. Retrieved 2009-07-29. 
  158. ^ "Ed Olivares Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivaed01.shtml. Retrieved 2009-07-29. 
  159. ^ "Omar Olivares Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivaom01.shtml. Retrieved 2009-07-29. 
  160. ^ "Al Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oliveal01.shtml. Retrieved 2009-07-29. 
  161. ^ "Andrew Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivean01.shtml. Retrieved 2010-10-04. 
  162. ^ "Bob Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivebo01.shtml. Retrieved 2009-07-29. 
  163. ^ "Darren Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oliveda02.shtml. Retrieved 2009-07-29. 
  164. ^ "Dave Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oliveda01.shtml. Retrieved 2009-07-29. 
  165. ^ "Gene Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivege01.shtml. Retrieved 2009-07-29. 
  166. ^ "Joe Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivejo01.shtml. Retrieved 2009-07-29. 
  167. ^ "Nate Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivena01.shtml. Retrieved 2009-07-29. 
  168. ^ "Tom Oliver Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oliveto01.shtml. Retrieved 2009-07-29. 
  169. ^ "Francisco Oliveras Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivefr01.shtml. Retrieved 2009-07-29. 
  170. ^ "Lester Oliveros Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivele01.shtml. Retrieved 2011-10-18. 
  171. ^ "Chi-Chi Olivo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivoch01.shtml. Retrieved 2009-07-29. 
  172. ^ "Diomedes Olivo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivodi01.shtml. Retrieved 2009-07-29. 
  173. ^ "Miguel Olivo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olivomi01.shtml. Retrieved 2009-07-29. 
  174. ^ "Jim Ollom Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ollomji01.shtml. Retrieved 2009-07-30. 
  175. ^ "Ray Olmedo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olmedra01.shtml. Retrieved 2009-07-30. 
  176. ^ "Luis Olmo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olmolu01.shtml. Retrieved 2009-07-30. 
  177. ^ "Fred Olmstead Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olmstfr01.shtml. Retrieved 2009-07-30. 
  178. ^ "Al Olmsted Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olmstal01.shtml. Retrieved 2009-07-30. 
  179. ^ "Hank Olmsted Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olmstha01.shtml. Retrieved 2009-07-30. 
  180. ^ "Barney Olsen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsenba01.shtml. Retrieved 2009-07-30. 
  181. ^ "Kevin Olsen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsenke01.shtml. Retrieved 2009-07-30. 
  182. ^ "Ole Olsen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsenol01.shtml. Retrieved 2009-07-30. 
  183. ^ "Scott Olsen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsensc01.shtml. Retrieved 2009-07-30. 
  184. ^ "Vern Olsen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsenve01.shtml. Retrieved 2009-07-30. 
  185. ^ "Garrett Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsonga01.shtml. Retrieved 2009-07-30. 
  186. ^ "Greg Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsongr02.shtml. Retrieved 2009-07-30. 
  187. ^ "Gregg Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsongr01.shtml. Retrieved 2009-07-30. 
  188. ^ "Ivy Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsoniv01.shtml. Retrieved 2009-07-30. 
  189. ^ "Karl Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsonka01.shtml. Retrieved 2009-07-30. 
  190. ^ "Marv Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsonma01.shtml. Retrieved 2009-07-30. 
  191. ^ "Ted Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsonte01.shtml. Retrieved 2009-07-30. 
  192. ^ "Tim Olson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olsonti01.shtml. Retrieved 2009-07-30. 
  193. ^ "Ed Olwine Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/olwined01.shtml. Retrieved 2009-07-30. 
  194. ^ "Logan Ondrusek Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ondrulo01.shtml. Retrieved 2010-10-04. 
  195. ^ "Ralph Onis Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/onisra01.shtml. Retrieved 2009-07-31. 
  196. ^ "Eddie Onslow Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/onsloed01.shtml. Retrieved 2009-07-31. 
  197. ^ "Jack Onslow Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/onsloja01.shtml. Retrieved 2009-07-31. 
  198. ^ "Steve Ontiveros (IF) Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ontivst01.shtml. Retrieved 2009-07-31. 
  199. ^ "Steve Ontiveros (P) Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ontivst02.shtml. Retrieved 2009-07-31. 
  200. ^ "José Oquendo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oquenjo01.shtml. Retrieved 2009-07-31. 
  201. ^ "Mike Oquist Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oquismi01.shtml. Retrieved 2009-07-31. 
  202. ^ "Tom Oran Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oranto01.shtml. Retrieved 2009-07-31. 
  203. ^ "Eddie Oravetz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oraveer01.shtml. Retrieved 2009-07-31. 
  204. ^ "Luis Ordaz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ordazlu01.shtml. Retrieved 2009-07-31. 
  205. ^ "Tony Ordeñana Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ordento01.shtml. Retrieved 2009-07-31. 
  206. ^ "Magglio Ordóñez Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ordonma01.shtml. Retrieved 2009-07-31. 
  207. ^ "Rey Ordóñez Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ordonre01.shtml. Retrieved 2009-07-31. 
  208. ^ "Joe Orengo Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orengjo01.shtml. Retrieved 2009-07-31. 
  209. ^ "Kevin Orie Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orieke01.shtml. Retrieved 2009-07-31. 
  210. ^ "George Orme Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ormege01.shtml. Retrieved 2009-07-31. 
  211. ^ "Jess Orndorff Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orndoje01.shtml. Retrieved 2009-07-31. 
  212. ^ "Eddie Oropesa Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oropeed01.shtml. Retrieved 2009-08-01. 
  213. ^ "Jesse Orosco Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oroscje01.shtml. Retrieved 2009-08-01. 
  214. ^ "Billy Orr Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orrbi01.shtml. Retrieved 2009-08-01. 
  215. ^ "Dave Orr Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orrda01.shtml. Retrieved 2009-08-01. 
  216. ^ "Pete Orr Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orrpe01.shtml. Retrieved 2009-08-01. 
  217. ^ "Joe Orrell Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orreljo01.shtml. Retrieved 2009-08-01. 
  218. ^ "Ernie Orsatti Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orsater01.shtml. Retrieved 2009-08-01. 
  219. ^ "John Orsino Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orsinjo01.shtml. Retrieved 2009-08-01. 
  220. ^ "Joe Orsulak Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orsuljo01.shtml. Retrieved 2009-08-01. 
  221. ^ "Jorge Orta Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortajo01.shtml. Retrieved 2009-08-01. 
  222. ^ "Anthony Ortega Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortegan01.shtml. Retrieved 2009-11-01. 
  223. ^ "Bill Ortega Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortegbi01.shtml. Retrieved 2009-08-01. 
  224. ^ "Phil Ortega Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortegph01.shtml. Retrieved 2009-08-01. 
  225. ^ "Frank Ortenzio Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortenfr01.shtml. Retrieved 2009-08-01. 
  226. ^ "Al Orth Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orthal01.shtml. Retrieved 2009-08-01. 
  227. ^ "Baby Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizba01.shtml. Retrieved 2009-08-02. 
  228. ^ "David Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizda01.shtml. Retrieved 2009-08-02. 
  229. ^ "Héctor Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizhe01.shtml. Retrieved 2009-08-02. 
  230. ^ "Javier Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizja01.shtml. Retrieved 2009-08-02. 
  231. ^ "José Ortiz (OF) Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizjo01.shtml. Retrieved 2009-08-02. 
  232. ^ "José Ortiz (2B) Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizjo04.shtml. Retrieved 2009-08-02. 
  233. ^ "Junior Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizju01.shtml. Retrieved 2009-08-02. 
  234. ^ "Luis Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizlu01.shtml. Retrieved 2009-08-02. 
  235. ^ "Ramón Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizra02.shtml. Retrieved 2009-08-02. 
  236. ^ "Roberto Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizro01.shtml. Retrieved 2009-08-02. 
  237. ^ "Russ Ortiz Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortizru01.shtml. Retrieved 2009-08-02. 
  238. ^ "Daniel Ortmeier Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortmeda01.shtml. Retrieved 2009-08-02. 
  239. ^ "John Orton Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ortonjo01.shtml. Retrieved 2009-08-02. 
  240. ^ "Chad Orvella Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orvelch01.shtml. Retrieved 2009-08-02. 
  241. ^ "Ossie Orwoll Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/orwolos01.shtml. Retrieved 2009-08-02. 
  242. ^ "Bob Osborn Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osborbo01.shtml. Retrieved 2009-08-03. 
  243. ^ "Fred Osborn Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osborfr02.shtml. Retrieved 2009-08-03. 
  244. ^ "Ozzie Osborn Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osboroz01.shtml. Retrieved 2009-08-03. 
  245. ^ "Bobo Osborne Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osborbo02.shtml. Retrieved 2009-08-03. 
  246. ^ "Donovan Osborne Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osbordo01.shtml. Retrieved 2009-08-03. 
  247. ^ "Fred Osborne Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osborfr01.shtml. Retrieved 2009-08-03. 
  248. ^ "Tiny Osborne Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osborti01.shtml. Retrieved 2009-08-03. 
  249. ^ "Wayne Osborne Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osborwa01.shtml. Retrieved 2009-08-03. 
  250. ^ "Pat Osburn Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osburpa01.shtml. Retrieved 2009-08-03. 
  251. ^ "Charlie Osgood Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osgooch01.shtml. Retrieved 2009-08-03. 
  252. ^ "Keith Osik Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osikke01.shtml. Retrieved 2009-08-03. 
  253. ^ "Dan Osinski Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osinsda01.shtml. Retrieved 2009-08-03. 
  254. ^ "Franquelis Osoria Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osorifr01.shtml. Retrieved 2009-08-03. 
  255. ^ "Harry Ostdiek Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ostdiha01.shtml. Retrieved 2009-08-03. 
  256. ^ "Champ Osteen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osteech01.shtml. Retrieved 2009-08-03. 
  257. ^ "Claude Osteen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osteecl01.shtml. Retrieved 2009-08-03. 
  258. ^ "Darrell Osteen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osteeda01.shtml. Retrieved 2009-08-03. 
  259. ^ "Fred Ostendorf Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ostenfr01.shtml. Retrieved 2009-08-03. 
  260. ^ "Bill Oster Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osterbi01.shtml. Retrieved 2009-08-03. 
  261. ^ "Red Ostergard Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osterre01.shtml. Retrieved 2009-08-03. 
  262. ^ "Charlie Osterhout Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osterch01.shtml. Retrieved 2009-08-03. 
  263. ^ "Fritz Ostermueller Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osterfr01.shtml. Retrieved 2009-08-03. 
  264. ^ "Jimmy Osting Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ostinji01.shtml. Retrieved 2009-08-03. 
  265. ^ "Brian Ostrosser Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ostrobr01.shtml. Retrieved 2009-08-03. 
  266. ^ "Joe Ostrowski Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ostrojo02.shtml. Retrieved 2009-08-03. 
  267. ^ "Johnny Ostrowski Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ostrojo01.shtml. Retrieved 2009-08-03. 
  268. ^ "Al Osuna Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osunaal01.shtml. Retrieved 2009-08-03. 
  269. ^ "Antonio Osuna Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/osunaan01.shtml. Retrieved 2009-08-03. 
  270. ^ "Roy Oswalt Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oswalro01.shtml. Retrieved 2009-08-03. 
  271. ^ "Willis Otanez Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otanewi01.shtml. Retrieved 2009-08-03. 
  272. ^ "Reggie Otero Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oterore01.shtml. Retrieved 2009-08-03. 
  273. ^ "Ricky Otero Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oterori01.shtml. Retrieved 2009-08-03. 
  274. ^ "Bill Otey Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oteybi01.shtml. Retrieved 2009-08-03. 
  275. ^ "Amos Otis Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otisam01.shtml. Retrieved 2009-08-03. 
  276. ^ "Bill Otis Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otisbi01.shtml. Retrieved 2009-08-03. 
  277. ^ "Harry Otis Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otisha01.shtml. Retrieved 2009-08-03. 
  278. ^ "Akinori Otsuka Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otsukak01.shtml. Retrieved 2009-08-04. 
  279. ^ "Billy Ott Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ottbi01.shtml. Retrieved 2009-08-04. 
  280. ^ "Ed Ott Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otted01.shtml. Retrieved 2009-08-04. 
  281. ^ "Mel Ott Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ottme01.shtml. Retrieved 2009-08-04. 
  282. ^ "Adam Ottavino Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ottavad01.shtml. Retrieved 2010-10-04. 
  283. ^ "Jim Otten Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ottenji01.shtml. Retrieved 2009-08-04. 
  284. ^ "John Otten Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ottenjo01.shtml. Retrieved 2009-08-04. 
  285. ^ "Billy Otterson Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/otterbi01.shtml. Retrieved 2009-08-04. 
  286. ^ "Dave Otto Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ottoda01.shtml. Retrieved 2009-08-04. 
  287. ^ "Phil Ouellette Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/ouellph01.shtml. Retrieved 2009-08-04. 
  288. ^ "Johnny Oulliber Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/oullijo01.shtml. Retrieved 2009-08-04. 
  289. ^ "Chink Outen Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/outench01.shtml. Retrieved 2009-08-04. 
  290. ^ "Jimmy Outlaw Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/outlaji01.shtml. Retrieved 2009-08-04. 
  291. ^ "Josh Outman Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/outmajo01.shtml. Retrieved 2009-08-04. 
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  293. ^ "Lyle Overbay Statistics". Baseball-Reference.com. http://www.baseball-reference.com/players/o/overbly01.shtml. Retrieved 2009-08-04. 
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