A hit by pitch is not counted statistically as a walk and therefore not counted in the strikeout-to-walk ratio.
The player with the highest single regular season K/BB ratio through 2018 was Minnesota Twins pitcher Phil Hughes in 2014, with a ratio of 11.625 (186 strikeouts and 16 walks). He is followed by Bret Saberhagen (11.00 in 1994) and Cliff Lee (10.28 in 2010). Despite pitching only 149 innings in 2016, Clayton Kershaw set a new record for K/BB ratio by striking out 172 batters while walking only 11 for a ratio of 15.6.
A pitcher who possesses a great K/BB ratio is usually a dominant power pitcher, such as Randy Johnson, Pedro Martínez, Curt Schilling, or Mariano Rivera. However, in 2005, Minnesota Twins starting pitcher Carlos Silva easily led the major leagues in K/BB ratio with 7.89:1, despite striking out only 71 batters over 188⅓ innings pitched; he walked only nine batters.
- Career Leaders & Records for Strikeouts / Base On Balls | Baseball-Reference.com
- "Hughes Loses 500k Bonus Due to Rain Delay". ESPN.com. Retrieved 24 September 2014.
- Single-Season Leaders & Records for Strikeouts / Base On Balls | Baseball-Reference.com
- "MLB Player Pitching Stats -2005". ESPN. Retrieved 5 July 2013.
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