I don't have anything for this season, but the Pittsburgh Pirates smashed 2 grand slams against the Mets on July 5.
Interpreted as:
list of MLB teams with 2 or more grand slams in 1 regular-season game this season| NAME | TEAM | DATE | GRANDSLAM | TM | OPP | AB | R | H | 2B | 3B | HR | RBI | BB | HBP | SO | SB | CS | PA | TB | XBH | SH | SF | IBB | GIDP | AVG | OBP | SLG | OPS | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Y. Grandal | | Pirates | 7/5/2024 | 0 |  PIT | vs |  NYM | 4 | 2 | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 4 | 6 | 2 | 0 | 0 | 0 | 0 | .500 | .500 | 1.500 | 2.000 |
| 2 | | D. Jefferies | | Pirates | 7/5/2024 | PIT | vs | NYM | ||||||||||||||||||||||||
| 3 | | J. Palacios | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 3 | 3 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 5 | 1 | 0 | 0 | 0 | 0 | 1 | .333 | .600 | .333 | .933 |
| 4 | | M. A. Taylor | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 4 | 2 | 4 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 4 | 7 | 1 | 0 | 0 | 0 | 0 | 1.000 | 1.000 | 1.750 | 2.750 |
| 5 | | R. Tellez | | Pirates | 7/5/2024 | 1 | PIT | vs | NYM | 4 | 2 | 2 | 0 | 0 | 2 | 5 | 1 | 0 | 0 | 0 | 0 | 5 | 8 | 2 | 0 | 0 | 0 | 0 | .500 | .600 | 2.000 | 2.600 |
| 6 | | K. Hayes | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .000 | .000 | .000 |
| 7 | | B. Reynolds | | Pirates | 7/5/2024 | 1 | PIT | vs | NYM | 5 | 3 | 4 | 0 | 0 | 2 | 6 | 0 | 0 | 0 | 0 | 0 | 5 | 10 | 2 | 0 | 0 | 0 | 0 | .800 | .800 | 2.000 | 2.800 |
| 8 | | J. Suwinski | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 4 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 5 | 4 | 1 | 0 | 0 | 0 | 0 | .250 | .400 | 1.000 | 1.400 |
| 9 | | J. Triolo | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||||
| 10 | | O. Cruz | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 4 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 5 | 2 | 0 | 0 | 0 | 0 | 0 | .500 | .600 | .500 | 1.100 |
| 11 | | N. Gonzales | | Pirates | 7/5/2024 | 0 | PIT | vs | NYM | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | .000 | .200 | .000 | .200 |
| 12 | | P. Skenes | | Pirates | 7/5/2024 | PIT | vs | NYM | ||||||||||||||||||||||||
| Total | 2 | 37 | 14 | 16 | 1 | 0 | 7 | 14 | 5 | 1 | 4 | 0 | 0 | 43 | 38 | 8 | 0 | 0 | 0 | 1 | .432 | .512 | 1.027 | 1.539 |
Some of the information used here was obtained free of charge from Retrosheet.
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