Sammy Sosa with 174 in 1997.
As of the 2008 season, that is Ferguson Jenkins who struck out 274 batters in 1970.
As of the 2010 season, the Yankees team record for strikeouts by a pitcher in a season is 248 by Ron Guidry in 1978.
Cecil Fielder with 182 strikeouts for the 1990 Tigers.
Matt Kilroy holds the record for most strikeouts by a pitcher in a single season with 513 in 1886. Nolan Ryan holds the modern day record with 383 in 1973.
Adam Dunn
Through the 2013 season, Mark Reynolds, who at the time played for the Arizona Diamondbacks, holds the MLB record for striking out in a season with 223 strikeouts in 2009.In 2010, Reynolds became the fastest player to reach 100 strikeouts in a season, doing this in only 67 games, and was on pace to break his own record. He finished the 2010 season with 211 strikeouts, which is fourth all-time.
The 2003 Chicagoe Cubs pitching staff had 1,404 strikeouts for the Major League record.
Matt Kilroy of the Baltimore Orioles had 513 strikeouts in 1886. Nolan Ryan who had 383 strikeouts in 1973 for the California Angels holds the modern day record. The record for most strikeouts in a single game is 20, shared by Kerry Wood and Roger Clemens, who did it twice. -------------------------------------------------------------------------------------------------------------------------- Not really germaine to the question but the record for most strikeouts in a game is 21 held by Tom Cheney of the Washington Senators who did the deed in 1962 against the Baltimore Orioles in a 16 inning game. Wood, Clemens, and Randy Johnson hold the record for strikeouts in a 9 inning game with 20.
In MLB, through the 2008 season: Pitcher: Nolan Ryan of the California Angels struckout 383 batters in 1973. Batter: Mark Reynolds of the Arizona Diamondbacks holds the MLB record for striking out in a season with 204 strikeouts in 2008.
Mark Bellhorn with 177 in 2004.
bob gibson
For the 2007 season, Jake Peavy of the San Diego Padres led all MLB pitchers in strikeouts with 240.