Strikeout-to-walk ratio
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In baseball statistics, strikeout-to-walk ratio (K/BB) is a measure of a pitcher's ability to control pitches; calculated as: strikeouts divided by bases on balls. A pitcher that possesses a great K/BB ratio is usually a dominant power pitcher, such as Randy Johnson, Pedro Martinez, Curt Schilling, or Ben Sheets. However, in 2005, Minnesota Twins starting pitcher Carlos Silva easily led the major leagues in K/BB ratio with 7.89:1, despite only striking out 75 batters over 188⅓ innings pitched; he walked only 9 batters.