The only player in Major League Baseball (MLB) history to hit two grand slams in a single inning is Fernando Tatís.
This extraordinary feat occurred on April 23, 1999, while Tatís was playing for the St. Louis Cardinals against the Los Angeles Dodgers at Dodger Stadium.
A Historic Day in Baseball
Fernando Tatís achieved this unprecedented milestone in the third inning of the game. What makes this accomplishment even more remarkable is that he hit both grand slams off the same pitcher, Chan Ho Park, who was pitching for the Dodgers. This single inning saw Tatís accumulate a staggering eight runs batted in (RBIs), setting another MLB record for most RBIs in one inning.
- Date of Event: April 23, 1999
- Team: St. Louis Cardinals
- Opponent: Los Angeles Dodgers
- Inning: 3rd inning
- Opposing Pitcher (both grand slams): Chan Ho Park
The Unprecedented Feat
Tatís's performance was a key part of an explosive inning for the Cardinals, who scored 11 runs in the third inning. His first grand slam came with the bases loaded after the Cardinals had already scored a few runs. Later in the same inning, the bases were loaded again, and Tatís stepped up to the plate, hitting his second grand slam, further cementing his place in baseball lore. This rare display of power and timely hitting stands as one of the most unique records in professional sports.
You can learn more about this historic moment from reputable baseball sources, such as this article: Fernando Tatís's two grand slams in one inning.
| Player | Team | Date | Achievement |
|---|---|---|---|
| Fernando Tatís | St. Louis Cardinals | April 23, 1999 | Two grand slams in a single inning |
