On May 30, 1987 — At Three Rivers Stadium Twenty Five Year old Eric Davis becomes the first National League player to hit three grand slams in a month, when he takes Dorn Taylor deep in the 3rd inning leading the Cincinnati Reds to a 6 – 2 victory over the Pittsburgh Pirates. His major league-leading 19 home runs also break the NL record for most homers batted between April and May, Davis was also hitting a robust .355.