Undefeated light heavyweight Artur Beterbiev needed only four rounds to stop former WBA titleholder Gabriel Campillo in the co-featured bout to the Adonis Stevenson-Sakio Bika fight in Quebec City, Quebec on Saturday. Beterbiev, THE RING’s No. 10-rated light heavyweight, dropped Campillo in Rounds 1 and 4.

The 30-year-old former Russian amateur star, who has won all eight of his pro bouts by knockout, put the veteran down with a sweeping right hand in the opening minute of Round 1. Campillo (25-7-1, 11 knockouts) survived the round using lateral movement, a high guard and a quick jab but his legs never looked 100 percent under him.

In Round 2, Beterbiev, who is based in Montreal, stepped up his pressure and directed straight power punches to Campillo’s stomach in an effort to bring his fellow contender’s hands down (and open for his vicious head shots). In Round 3, Campillo landed stiff jabs through Campillo’s guard and straight rights to the body on his way in close where he dropped compact power combinations. Campillo, a 36-year-old southpaw from Madrid, Spain, could only cover up when Beterbiev opened up on him.

Beterbiev quickly cut the ring off at the start of Round 4 and ended the fight with a brutal right cross-left hook combination and caught the faded veteran against the ropes.

Campillo is the second former light heavyweight titleholder that Beterbiev has defeated since turning pro in June 2013. Last September he stopped former IBF beltholder Tavoris Cloud in two rounds in his sixth pro bout.

The fight was part of a Premier Boxing Champions card that took place at the Pepsi Coliseum and was televised live on CBS in the U.S.