Vitor Belfort leads UFC history with 11 first-round knockouts

Vitor Belfort holds the UFC record with 11 first-round knockouts. Anthony Johnson ranks second with nine, while Michal Oleksiejczuk has eight. Sergey Pavlovich, Francis Ngannou, Andrei Arlovski, Cain Velasquez, Anderson Silva, and Derrick Lewis each have seven first-round knockouts.