Pepsi Coliseum, Quebec City, Canada -  Montreal-based Russian Artur Beterbiev crushed former title-challenger Gabriel Campillo, knocking out the Spaniard at 2:22 of the fourth round with a massive right-left combination in a light heavyweight bout.

Campillo was hurt very early in the contest and went down in the first round. He was then hurt a few more times in the second and badly in the third, before getting crushed by a knockout combination in the fourth.

It was the eighth knockout in as many pro bouts for Beterbiev, who enjoyed a standout amateur career. Campillo fell to 25-7-1, with 12 knockouts, dominated the whole way by Beterbiev who proclaimed himself ready for a professional world title shot. 

Campillo said afterwards that he never recovered from the first big shot in round one.

"I really wanted to push Beterbiev into the late rounds of this fight to see how he'd handle that, but I wasn't able to get it done. The most important punch was the first time he caught me in round one. After that shot I wasn't able to regain myself," Campillo said.

"I was thrilled to get this opportunity to fight on CBS. This PBC production was very nice to be a part of and I think the series will do a lot to help grow the sport. My plan for now is to rest. Then we'll revisit the situation and see about fighting again."