In the first game of a doubleheader in Philadelphia, a record 12 future Hall of Famers play in the Yankees’ 9 – 7 victory over the Athletics. This number does not include non-playing Hall of Famers Herb Pennock and Stan Coveleski, managers Miller Huggins and Connie Mack, nor umpire Tom Connolly.

This Day In Baseball

On May 24, 1928 — In the first game of a doubleheader in Philadelphia, a record 12 future Hall of Famers play in the Yankees’ 9 – 7 victory over the Athletics. This number does not include non-playing Hall of Famers Herb Pennock and Stan Coveleski, managers Miller Huggins and Connie Mack, nor umpire Tom Connolly.

Source:
Baseball Reference May 24