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

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