Bernie Williams and Alex Rodriguez have the most Postseason home runs as a Yankee in a single season with 6. Williams did it in 1996, and Rodriguez did it in 2009.
The 1998 Yankees won the most regular season games. The Yankees won 125 games in 1998. 114 games in the regular season and 11 more in the postseason.
Carlos Beltran's 8 home runs in the 2004 postseason for the Houston Astros.Barry Bonds also hit 8 home runs in the 2002 postseason for the San Francisco Giants.Barry Bonds has the most postseason home runs in a single season with 8 in 2002.
Barry Bonds holds the record for most postseason home runs in a single season with 8, set in 2002.
Two players are tied with five Series homers: Reggie Jackson of the 1977 New York Yankees and Chase Utley of the 2009 Philadelphia Phillies.
Allie Reynolds had at least one World Series win each year for the Yankees from 1949-1953. http://www.baseball-reference.com/postseason/