Vitor Belfort leads all UFC fighters with 11 first-round knockouts

Vitor Belfort holds the UFC record for most first-round knockouts with 11, ahead of Anthony Johnson's nine. Michal Oleksiejczuk, Sergei Pavlovich, Francis Ngannou, Andrei Arlovski, Cain Velasquez, Anderson Silva, and Derrick Lewis each have seven first-round stoppages in the promotion.