UFC First-Round Knockout Leaders: Belfort Tops List with 11

Vitor Belfort holds the UFC record for most first-round knockouts with 11. Anthony Johnson ranks second with 9, followed by Michal Oleksiejczuk with 8. Sergey Pavlovich and Francis Ngannou are tied with 7 each, alongside Andrei Arlovski, Cain Velasquez, Anderson Silva, and Derrick Lewis.