Callum Smith is only days away from one of the biggest opportunities of his pro career, when he faces WBO, IBF, WBC light heavyweight world champion Artur Beterbiev.

Beterbiev vs. Smith takes place on Saturday night at the Videotron Center in Quebec.

Smith, a former super middleweight champion, is hungry to secure another world title run.

"I definitely do believe I will prove all the doubters wrong," Smith told Sky Sports. "I know how good I am, I know how good I can be. Sometimes you don't really get the opportunity to show that.

"This time I've got the best fight possible for me in this division and if I win I become a two-weight world champion, three world titles. That's been the biggest motivation for me these last few camps and I'm very, very close to achieving it."

Beterbiev has stopped every single opponent in his path. Smith has never been stopped.

He's been working on different strategies to deal with Beterbiev's punching power.

"I think you've just got to be smart," Smith said.

"He's a big puncher but nothing in my career so far shows that my chin's a bit suspect or anything like that. Touch wood, I've never been hit or hurt or dropped as a professional. I've always been very confident defensively. I believe I'm pretty tidy and I can stay quite tight. I know the dangers.

"You can't afford to take any silly shots. That's the difference between a good fighter and a great fighter. It's not how hard you can punch or how fast you are. It's knowing when to punch, when not to punch, the mistakes you make - limiting them down.

"When you're fighting a big puncher it keeps you mentally that little bit switched on, knowing you can't afford any mistakes at all."