Kamaru Usman scored a stunning second-round knockout to finish Jorge Masvidal and retain the undisputed UFC welterweight title at UFC 261.

American Masvidal, 36, said that he would fare better after a full training camp, while Nigerian Usman, 33, promised to deliver an even more decisive victory in the rematch to register his fourth successive title defense.

The pair engaged in a thrilling back-and-forth battle through round one, with both men enjoying success on the feet, while Usman scored a significant takedown midway through the round.

The bout exploded in round two when Usman connected with a huge straight right hand that sent Masvidal crashing to the canvas for a knockout victory.

Usman’s win improved his record to 19-1 and extended his unbeaten run to 18 fights, including 14 straight victories in the UFC.

“I told everybody, I’m still getting better. The sky’s the limit for me as long as I’m doing this,” he said.