Strikeout

In baseball or softball, a strikeout or strike out (denoted by SO or K) happens when a batter gets three strikes when at bat.

Strikeout Media

Cincinnati Reds outfielder Adam Dunn strikes out swinging.
Hall of Famer Sandy Koufax was the first notable strikeout pitcher and the first to average more than a strikeout per inning pitched.
Detroit Tigers fan keep track of their starting pitcher's strikeouts during a game in 2010, with each 'K' representing one strikeout.
The batter attempting to advance to first base after an uncaught third strike, which the catcher has already retrieved and is about to throw to the first baseman to record the putout
An electronic banner announcing the milestone achievement of John Smoltz recording his 3000th strikeout during a game in April 2008

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