Did you know that Joe DiMaggio's brother, Vince DiMaggio hit more grand slams during a single season than he did? Did you know that Ernie Banks is the only National League player in history with more than four slams in a season?
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The American League single season record for games played was set in 1987 by Don Mattingly of the New York Yankees. The National League single season record for games played is on this page. Is either the Career Leader for Grand Slams?