Quebec, Canada - For the WBC, WBO, IBF light heavyweight titles, Artur Beterbiev (20-0, 20 KOs) continued the knockout train with a stoppage of Callum Smith (29-2, 21 KOs) in seven rounds.

Smith, the WBC's mandatory challenger, tried his best but he was unable to deal with the punching power of the dangerous Beterbiev.

After several rounds of taking punishment, the end came in the seventh round.

A barrage of punches sent Smith down for the first time in his professional career. Smith beat the count, but another barrage sent him down for a second time.

Smith's trainer, Buddy McGirt, had seen enough and entered the ring to wave off the fight.

In the aftermath of the fight, Beterbiev's promoter, Bob Arum of Top Rank, expressed their desire to finalize an undisputed fight with WBA light heavyweight champion Dmitry Bivol.

The contest, matching two of the sport's pound for pound fighters, is likely to land in the second half of the year, in the country of Saudi Arabia.

Arum will begin discussions with the Saudi sports authority to work out the details for the fight.

“It’s not done yet. But absolutely we want to do it. I’ll be talking to my friend His Excellency Turki Alalshikh. I know he wants to do it, but Ramadan is coming. So, about three months after the end Ramadan we’ll be ready to fight Dmitry Bivol, probably in Riyadh,” Arum said.

Bivol saw action last month in Riyadh, as part of the big 'Day of Reckoning' event. He dominated British contender Lyndon Arthur over twelve rounds. In recent interviews, Bivol has stated that he signed his side of the agreement for an undisputed fight with Beterbiev.