Most home runs in a single MLB Home Run Derby

The most home runs hit in a single MLB Home Run Derby is 91, and was achieved by Vladamir Guerrero Jr. (Canada) at Progressive Field, in Cleveland, Ohio, USA on 8 July 2019.

Vladamir Guerrero Jr. had already surpassed Giancarlo Stanton's single derby record by 8 "dingers" by the end of the second round. Although Guerrero went on to lose in the final by a single home run to Pete Alonso who clinched the $1 million prize money with 23 homers in the final round.