Another Mother’s Day hero is the Marlins’ Giancarlo Stanton, swinging a pink bat in support of breast cancer research, who belts a walk-off grand slam off Manny Acosta of the Mets, capping a 6-run 9th-inning rally as Miami wins, 8 – 4. And he is not the only player to accomplish the feat, as the Reds’ Joey Votto also ends his team’s game with a slam, completing a three-homer game as Cincinnati defeats the Nationals, 9 – 6. It the first time that two games end on a grand slam on the same day since April 10, 1988, when Mo Vaughn and Steve Finley were the hitters.

On May 13, 2012 — Another Mother’s Day hero is the Marlins’ Giancarlo Stanton, swinging a pink bat in support of breast cancer research, who belts a walk-off grand slam off Manny Acosta of the Mets, capping a 6-run 9th-inning rally as Miami wins, 8 – 4. And he is not the only player to accomplish the feat, as the Reds’ Joey Votto also ends his team’s game with a slam, completing a three-homer game as Cincinnati defeats the Nationals, 9 – 6. It the first time that two games end on a grand slam on the same day since April 10, 1988, when Mo Vaughn and Steve Finley were the hitters.

Source:
Baseball Reference May 13