https://365.strat-o-matic.com/game/442319/925The Flyers cracked two grand slams in the 5th inning against the expos. The slams were cracked by Lindor and Thames. It was part of a 13-run inning that all happened after CF Eddie Rosario couldn't run down a two-out catchable flyball that would of ended the inning scoreless.
The eight times this has happened before:
http://www.baseballroundtable.com/two-g ... ays-a-win/4/23/99 - Fernando Tatis became the only player to hit 2 grand slams in one inning!
8/6/1986 - The Orioles became the only team to accomplish feat but lose the game. As a birds fan growing up, this loss signaled the end of "Oriole's Magic". In Weaver's only full season of his "comeback", going into this game the Orioles were 12 games over 500, 2nd place, and 2.5 games behind the Red Sox. This loss started a record of 14-42 over the last 2 months that resulted finishing dead last and Weaver re-retiring.