Former undisputed heavyweight champion Mike Tyson was ringside last Saturday night at T-Mobile Arena in Las Vegas, as he watched WBA light heavyweight champion Dmitry Bivol pull off a major upset when he outboxed Saul 'Canelo' Alvarez over twelve rounds.

All three of the official judges saw it 115-113 for Bivol - although ringside observers saw it as a much wider fight.

Canelo, who still holds the undisputed super middleweight crown, is possibly going to exercise an immediate rematch clause.

According to Tyson, Canelo's lack of a jab in the contest was a contributing factor in the loss.

"I just think if Canelo was using his jab effectively, hard, the guy [Bivol] wouldn’t have been able to come in. The guy was coming in because he wasn’t worried about Canelo’s jab. So he got more aggressive, he got brave," Tyson said.

"If he’s not jabbing, he has no defense. If he’s not gonna jab, the guy’s gonna walk right in on him like he did. Next fight – use your jab, different fight. When [Bivol] was jabbing, Canelo should have been moving, slipping the jab, anticipating the combination. If he was slipping the jab, the guy wouldn’t throw the combination.

"If Canelo would’ve used his jab, I was discussing with my wife [saying], 'he’s not using his jab,' then the next round I saw him using his jab so his corner must’ve been telling him the same thing. I believe if he used his jab it would’ve been a different fight."

Canelo was scheduled to face Gennadiy Golovkin in a trilogy fight in September. That scenario could possibly get put on hold while the Mexican superstar pursues another fight with Bivol.