List of Major League Baseball home run records Season records Two grand slams by one hitter in one game

| Player | Team | Date_ | Opponent | Venue_ |
|---|---|---|---|---|
| Chris Hoiles | Baltimore Orioles | August 14, 1998 | Cleveland Indians | Jacobs Field |
| Fernando Tatís5 | St. Louis Cardinals | April 23, 1999 | Los Angeles Dodgers | Dodger Stadium |
| Nomar Garciaparra6 | Boston Red Sox | May 10, 1999 | Seattle Mariners | Fenway Park |
| Bill Mueller7 | Boston Red Sox | July 29, 2003 | Texas Rangers | The Ballpark in Arlington |
| Josh Willingham | Washington Nationals | July 27, 2009 | Milwaukee Brewers | Miller Park |