yes there has in usa baseball a pitchter in a high school game in Ohio he's name is r.l eisenboch i don't know if its spelled right thought Not in MLB or the minor leagues. But there has been one...
In MLB through the 2009 season, 4. 1) Nolan Ryan - 5 times (4 19 strikeout games and 1 18 strikeout game). 2) Randy Johnson - 4 times (1 20, 2 19s, and 1 18). 3) Roger Clemens - 3 times (2 20s and 1...