In the UFC 241 main event, Stipe Miocic earned a fourth-round TKO victory over Daniel Cormier to win the heavyweight championship.
Cormier appeared to be leading the highly anticipated rematch heading into the championship rounds, but Miocic (19-3) wore the veteran down with multiple left hooks to the body.
After several shots, the new champion landed key blows to the head before referee Herb Dean officially called the fight.
Cormier dropped to 22-2, with one no-contest, following the defeat. Prior to Saturday's title bout, the 40-year-old had only previously lost to rival Jon Jones.
With the impressive victory, Miocic moved to 5-1 in championship matchups and cemented his place as one of the UFC's best all-time heavyweights.
Cormier was asked about potential retirement plans shortly after the main event, but claimed he had not yet made a decision on his future. He did note, however, that he had other opportunities to explore and wanted to talk to his wife before making the final call.
Top contender Francis Ngannou, who Miocic defeated in January 2018, was quick to weigh in and call for a rematch with the new titleholder.
In their first matchup last year, Cormier knocked out Miocic to capture the heavyweight title in addition to the light heavyweight belt he held at the time.