From @grok: This (A&M 15, South Carolina 12) marked the first time in recorded baseball history—college or MLB—that a team hit two grand slams in the bottom of the ninth to win a game. @AggieBaseball
— Mark Passwaters (@mbpRivals) April 13, 2025
I've seen reference to three games since 1990 with two 9th inning grand slams, but I think we were the only one to come from behind to win the game.