Roger Clemens
jakie robinson
The pitcher that struck out the most batters in history is Nolan Ryan. He has struck out 5,714 batters during his career from September 11, 1966 until September 22, 1993.
Roger Clemens (twice), Randy Johnson and Kerry Wood have each struck out 20 batters in a game, the record.
Roger Clemens
I DO NOT KNOW, HOWEVER I DO KNOW HE STRUCK OUT 10 BATTERS IN A ROW IN A GAME IN 1970....THATS INCREDIBLE.
No, Scott Kazmir hasn't struck out 27 batters in an official game however he struck out 41 batters with Tampa Bay in 2004, he struck out 174 batters in 2005 and 163 in 2006 all with Tampa, he struck out 239 in 2007 and 166 with Tampa in 2008, he struck out 26 with Tampa in 2019 and 117 with the Angels in 2009, he struck out 93 batters in 2010 but failed to strike any batter out in 2011 and didn't participate in an official Major League inning in 2012, he struck out 162 batters in 2013 with the Cleveland Indians and he struck out 164 batters in 2014 with the Oakland Athletics.
There have been three pitchers to strikeout 20 batters in one game and one pitcher to strikeout 21 batters in a game. The three to strikeout 20 were Kerry Wood, Roger Clemens, and Randy Johnson. All three struckout all those batters in a nine inning game. The pitcher to strikeout 21 batters, Tom Cheney, needed 16 innings. Cheney's 21 strikeouts is the MLB record for strikeouts by a pitcher in a single game.
Roger Clemens (twice), Kerry Wood and Randy Johnson have each struck out 20 batters in a game.
Josh Beckett
Roger Clemens with 20 struck out batters! XD
Pedro has struck out over 15 batters in a game ten times, which is tied for third with Roger Clemens (behind Nolan Ryan's 27 and Randy Johnson's 29). The most he's struck out in a single game is 17 on September 10, 1999 versus the Yankees
In the minor leagues that was Ron Necciai of the 1952 Bristol Twins who struck out 27 batters in a no-hitter against the Welsh Miners in an Appalachian League game. In MLB that was Nolan Ryan of the 1973 California Angels who struck out 17 batters in a no hitter against the Detroit Tigers.