This Day In New York Yankees History 9/29: Don Mattingly Has Six Grand Slams

Don Mattingly had a career with the bases loaded in 1987 as he hit more home runs with the bases loaded this season then some people hit in their entire careers. Mattingly set a major league record on this day by hitting his sixth grand slam of the season passing Ernie Banks (1955 Chicago Cubs) and Jim Gentile (1961 Baltimore Orioles). What makes this more amazing is Mattingly played 14 seasons in his career and never hit another grand slam outside of the 1987 season.

Also on this day in 1934 Babe Ruth hit his 659th and final home run in a New York Yankees uniform. Ruth had 49 home runs with the Boston Red Sox before being sold to New York and would add six more with the Boston Braves before retiring in the 1935 season.