As of the 2010 season, the Yankees team record for strikeouts by a pitcher in a season is 248 by Ron Guidry in 1978.
Through the 2008 season, that is Paul Quantrill who pitched in 86 games in the 2004 season.
Lou Gehrig of the New York Yankees holds American League record for RBIs in a single season with 184 in 1931.
The Yankees went 114-48 in 1998 which is a franchise record
Pedro Martinez. Martinez holds the Red Sox single season strikeout record with 313 in 1999.
Ron Guidry Guidry set the Yankees single game record when he struckout 18 California Angels in a game on June 17, 1978.
The Yankees single season record is held by Rickey Henderson, who stole 93 bases in 1988.
Alfonso Soriano. Through the 2009 season, the most strikeouts by a Yankees batter in a season is 157 by Alfonso Soriano in 2002.
counting post season play the Yankees hold that record with 125 wins in 1998Yankees 106
Roger Maris holds the American League and the New York Yankees record for most home runs in a single season with 61. Roger accomplished this in 1961.