On this date

May 4

1931: In an effort to put less strain on his leg, Babe Ruth plays first base as Lou Gehrig moves to right field.

1939: Boston rookie Ted Williams became the first player to hit a home run that cleared the right field seats at Briggs Stadium in Detroit. It was his first at-bat at Detroit. The Red Sox edged the Tigers 7-6.

1966: Willie Mays broke the National League record with the 512th home run of his career in a 6-1 victory over the Los Angeles Dodgers at Candlestick Park. Mays passed another Giant, breaking the mark established by Mel Ott in 1946.