Tyson Fury, love handles and all, ridiculously chastised a comparatively chiseled Francis Ngannou for being fat during their final press conference Thursday night in Riyadh, Saudi Arabia.

A shirtless Ngannou, whose open jacket exposed much more defined abs than Fury possesses, reminded the unbeaten WBC heavyweight champion that Fury himself has knocked out many opponents when he was fat. Fury laughed and admitted Ngannou had made a very valid point.

That’s about all they agreed upon, though, two days in advance of a 10-round, non-title fight Fury is listed by FanDuel sportsbook as a 20-1 favorite to win.

Fury (33-0-1, 24 KOs) dismissed the danger Ngannou supposedly presents and predicted that he would be the one to knock out a novice in this crossover event between a boxer and a mixed martial artist.

“I’m gonna knock that big stiff spark out, and there’s nothing he can do about it,” Fury yelled. “No matter who he trains with, no matter what he brings on the night, I’m knocking you spark out on Saturday night! Game over! Out cold! No problem! Out cold! Out cold! Out cold! You’re getting knocked spark out! Without a doubt, that right hand is gonna detonate right in your face, you big, ugly dosser!”

Cameroon’s Ngannou, trained with Mike Tyson for his pro boxing debut, is 17-3 in professional MMA matches. Each of the three losses the former UFC heavyweight champ has suffered in his sport were unanimous-decision defeats.

The 6-foot-9, 270-pound Fury still believes that he has the skill and power required to knock Ngannou out in a main event that will headline pay-per-view shows in the United Kingdom (£21.95; 7 p.m. BST) and the United States ($79.99; 2 p.m. EDT; 11 a.m. PDT).

“In America we say a statement like this, ‘I’mma knock a motherf------ out!’ And that’s how we do it,” said Fury, who resides and trains in England. “That’s how we do it. And I been working with ‘Sugar Hill’ [Steward] to knock him out cold on Saturday night. And I have no doubt in my mind that I will knock him out. He’s a big, strong guy. Obviously he’s got a punch, powerful. So am I. I’m a big, strong guy, obviously powerful, or else I wouldn’t be world heavyweight champion. But I believe there’s levels to the game. And he’s gonna find out my level on Saturday night.”

Assuming Fury beats Ngannou at the newly constructed Kingdom Arena, he has already signed a contract to face an opponent who is on his level, Oleksandr Usyk. Their title unification fight could take place as soon as December 23 in Riyadh if Fury emerges from his fight against Ngannou without any cuts or other injuries.

Unless it were to result in a draw or a no-contest, the 12-round bout between Fury and Ukraine’s Usyk (21-0, 14 KOs) will crown the first fully unified heavyweight champion of the four-belt era. The left-handed Usyk, who will sit ringside Saturday night, owns the IBF, IBO, WBA and WBO belts.

Keith Idec is a senior writer/columnist for BoxingScene.com. He can be reached on Twitter @Idecboxing.