Manny Ramirez
Most RBIs in a single postseason, 21.
Most home runs in a single world series game, 3 home runs.
Barry Bond
Kenny Lofton
Barry Bond
Babe Ruth
franchise, home run derby,postseason, practice
California Angels.
Barry Bonds is the current holder, with 73 home runs in 2001.
Major League Baseball (MLB) seasons have always started well after January 1, and ended well before December 31. Thus, the record for the most runs in a season would also be the record for the most runs in a calendar year. That record was made in the National League in 1894, when William Robert "Sliding Billy" Hamilton scored 198 runs. He holds many other unbroken records, as well.
Javy Lopez of the Atlanta Braves with 42 in 2003.