From its inception in 2005 through 2008, the annual award was voted online by fans from a group of 10 finalists chosen by an MLB panel.[3][4] The panel took sole responsibility to select the annual winner starting in 2009.[3][5] The winner of the monthly award is decided on by a four-man panel, which originally consisted of Dennis Eckersley, Jerome Holtzman, Rick Sutcliffe and Bob Watson.[6] The panel has included Darryl Hamilton and Mike Bauman, a national columnist for MLB.com.[7]
Month |
Season |
Player |
Team |
SV |
ERA |
H |
BB |
K |
IP |
Ref |
1 !April |
2005 |
Mesa, JoséJosé Mesa |
Pittsburgh Pirates |
8 |
1.12 |
7 |
2 |
10 |
8 |
[15] |
2 !May |
2005 |
Hoffman, TrevorTrevor Hoffman (1) |
San Diego Padres |
12 |
0.82 |
6 |
1 |
13 |
11 |
[16] |
3 !June |
2005 |
Cordero, ChadChad Cordero |
Washington Nationals |
15 |
0.00 |
11 |
2 |
14 |
16.333333333333 !16 1⁄3 |
[17] |
4 !July |
2005 |
Lidge, BradBrad Lidge |
Houston Astros |
8 |
1.64 |
4 |
1 |
15 |
11 |
[18] |
5 !August |
2005 |
Jones, ToddTodd Jones |
Florida Marlins |
12 |
0.66 |
10 |
0 |
13 |
13.666666666667 !13 2⁄3 |
[19] |
6 !September |
2005 |
Dempster, RyanRyan Dempster |
Chicago Cubs |
13 |
0.00 |
10 |
5 |
19 |
15.666666666667 !15 2⁄3 |
[20] |
1 !April |
2006 |
Papelbon, JonathanJonathan Papelbon |
Boston Red Sox |
10 |
0.00 |
7 |
2 |
14 |
14.333333333333 !14 1⁄3 |
[21] |
2 !May |
2006 |
Isringhausen, JasonJason Isringhausen |
St. Louis Cardinals |
10 |
0.77 |
7 |
8 |
14 |
11.666666666667 !11 2⁄3 |
[22] |
3 !June |
2006 |
Jenks, BobbyBobby Jenks (1) |
Chicago White Sox |
10 |
0.60 |
9 |
5 |
16 |
15 |
[23] |
4 !July |
2006 |
Nathan, JoeJoe Nathan (1) |
Minnesota Twins |
9 |
0.75 |
9 |
4 |
19 |
12 |
[24] |
5 !August |
2006 |
Rodríguez, FranciscoFrancisco Rodríguez (1) |
Los Angeles Angels of Anaheim |
12 |
0.00 |
7 |
6 |
17 |
13.333333333333 !13 1⁄3 |
[25] |
6 !September |
2006 |
Hoffman, TrevorTrevor Hoffman (2) |
San Diego Padres |
10 |
1.50 |
7 |
4 |
13 |
12 |
[26] |
1 !April |
2007 |
Cordero, FranciscoFrancisco Cordero |
Milwaukee Brewers |
10 |
0.00 |
2 |
7 |
19 |
11.333333333333 !11 1⁄3 |
[27] |
2 !May |
2007 |
Hoffman, TrevorTrevor Hoffman (3) |
San Diego Padres |
11 |
0.00 |
6 |
1 |
10 |
12.333333333333 !12 1⁄3 |
[28] |
3 !June |
2007 |
Putz, J. J.J. J. Putz (1) |
Seattle Mariners |
11 |
0.59 |
6 |
3 |
19 |
15.333333333333 !15 1⁄3 |
[29] |
4 !July |
2007 |
Wagner, BillyBilly Wagner |
New York Mets |
8 |
0.00 |
2 |
4 |
7 |
9 |
[30] |
5 !August |
2007 |
Saito, TakashiTakashi Saito |
Los Angeles Dodgers |
10 |
0.68 |
7 |
2 |
21 |
13.333333333333 !13 1⁄3 |
[31] |
6 !September |
2007 |
Corpas, MannyManny Corpas |
Colorado Rockies |
8 |
2.30 |
13 |
2 |
5 |
15.666666666667 !15 2⁄3 |
[32] |
1 !April |
2008 |
Rivera, MarianoMariano Rivera (1) |
New York Yankees |
8 |
0.00 |
4 |
0 |
12 |
13 |
[33] |
2 !May |
2008 |
Ryan, B. J.B. J. Ryan |
Toronto Blue Jays |
10 |
0.75 |
7 |
6 |
14 |
12 |
[34] |
3 !June |
2008 |
Rodríguez, FranciscoFrancisco Rodríguez (2) |
Los Angeles Angels of Anaheim |
11 |
1.59 |
5 |
5 |
12 |
11.333333333333 !11 1⁄3 |
[7] |
4 !July |
2008 |
Nathan, JoeJoe Nathan (2) |
Minnesota Twins |
7 |
0.82 |
3 |
5 |
12 |
11 |
[35] |
5 !August |
2008 |
Valverde, JoseJose Valverde |
Houston Astros |
11 |
0.64 |
5 |
3 |
17 |
14 |
[36] |
6 !September |
2008 |
Soria, JoakimJoakim Soria (1) |
Kansas City Royals |
9 |
0.00 |
3 |
4 |
8 |
10.333333333333 !10 1⁄3 |
[37] |
1 !April |
2009 |
Bell, HeathHeath Bell |
San Diego Padres |
8 |
0.00 |
4 |
2 |
9 |
8.6666666666667 !8 2⁄3 |
[38] |
2 !May |
2009 |
Hoffman, TrevorTrevor Hoffman (4) |
Milwaukee Brewers |
11 |
0.00 |
4 |
1 |
11 |
12 |
[39] |
3 !June |
2009 |
Nathan, JoeJoe Nathan (3) |
Minnesota Twins |
11 |
0.00 |
4 |
1 |
18 |
11.666666666667 !11 2⁄3 |
[40] |
4 !July |
2009 |
Rivera, MarianoMariano Rivera (2) |
New York Yankees |
10 |
0.00 |
3 |
2 |
9 |
11.666666666667 !11 2⁄3 |
[41] |
5 !August |
2009 |
Franklin, RyanRyan Franklin |
St. Louis Cardinals |
11 |
0.00 |
6 |
6 |
4 |
11 |
[42] |
6 !September |
2009 |
Soria, JoakimJoakim Soria (2) |
Kansas City Royals |
10 |
0.00 |
12 |
5 |
21 |
13.666666666667 !13 2⁄3 |
[43] |
1 !April |
2010 |
Capps, MattMatt Capps |
Washington Nationals |
10 |
0.68 |
12 |
6 |
15 |
13.333333333333 !13 1⁄3 |
[44] |
2 !May |
2010 |
Soriano, RafaelRafael Soriano (1) |
Tampa Bay Rays |
9 |
0.00 |
3 |
3 |
9 |
11.333333333333 !11 1⁄3 |
[45] |
3 !June |
2010 |
Jenks, BobbyBobby Jenks (2) |
Chicago White Sox |
10 |
0.75 |
7 |
1 |
14 |
12 |
[46] |
4 !July |
2010 |
Soriano, RafaelRafael Soriano (2) |
Tampa Bay Rays |
11 |
2.57 |
4 |
4 |
9 |
14 |
[47] |
5 !August |
2010 |
Soriano, RafaelRafael Soriano (3) |
Tampa Bay Rays |
10 |
0.82 |
4 |
2 |
10 |
10 2⁄3 |
[48] |
6 !September |
2010 |
Mármol, CarlosCarlos Mármol |
Chicago Cubs |
13 |
0.00 |
2 |
10 |
25 |
14 2⁄3 |
[49] |
1 !April |
2011 |
Street, HustonHuston Street |
Colorado Rockies |
10 |
2.20 |
13 |
4 |
17 |
16 1⁄3 |
[50] |
2 !May |
2011 |
Putz, J. J.J. J. Putz (2) |
Arizona Diamondbacks |
11 |
0.00 |
5 |
4 |
10 |
13 |
[51] |
3 !June |
2011 |
Hanrahan, JoelJoel Hanrahan |
Pittsburgh Pirates |
9 |
0.71 |
5 |
3 |
11 |
12 2⁄3 |
[52] |
4 !July |
2011 |
Axford, JohnJohn Axford |
Milwaukee Brewers |
11 |
2.57 |
13 |
3 |
16 |
14 |
[53] |
5 !August |
2011 |
Kimbrel, CraigCraig Kimbrel |
Atlanta Braves |
10 |
0.00 |
6 |
4 |
23 |
12 2⁄3 |
[54] |
6 !September |
2011 |
Putz, J. J.J. J. Putz (3) |
Arizona Diamondbacks |
10 |
0.00 |
6 |
1 |
15 |
9 2⁄3 |
[55] |