- Who
- Philadelphia Phillies, Arizona Diamondbacks
- What
- 13 total number
- Where
- United States (Philadelphia)
- When
The most home runs in a single Major League Baseball game is 13, and was achieved by the Arizona Diamondbacks and the Philadelphia Phillies (both USA) at Citizens Bank Park, Philadelphia, Pennsylvania, USA, on 10 June 2019.
The Phillies and the Diamondbacks combined for 13 dingers with the Diamondbacks winning the game 13-8.
