Saul 'Canelo' Alvarez might be 'burned out' from the sheer number of fights he has had in the last few years ahead of his trilogy bout against Gennady Golovkin, former world champion Sergio Mora says.

The Mexican will lock horns with his old middleweight rival on September 17 at the T-Mobile Arena in Las Vegas with his WBA, WBC, IBF, IBO and Ring belts up for grabs.

Canelo Alvarez has fought five times over the past couple of years, winning four of them including victories over Caleb Plant, Callum Smith and Billy Joe Saunders, before suffering a surprise defeat to Dmitry Bivol in his last outing.

Golovkin, meanwhile, has only fought twice during that same period.

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And Mora reckons Canelo could be feeling the effects of a busy schedule going into their trilogy fight.

He told FightHype: “As far as the X's and O's and who wins the fight, no, it hasn’t changed. I still favour Canelo, and I would favour Canelo maybe even by stoppage.

“What does make things interesting is Canelo’s coming off a loss. Canello is so bitter about Golovkin, and they know each other so well.

Canelo Alvarez and Gennady "GGG" Golovkin Media Workout

LOS ANGELES, CA - AUGUST 26: Canelo Alvarez during a media workout before his fight against Gennady "GGG" Golovkin at the Banc of California Stadium on August 26, 2018 in Los Angeles, California. (Photo by Harry How/Getty Images)

"Golovkin is coming off a win, and he’s not going to have to sacrifice to make 160. He can be stronger and bigger at 168.

“They’ve felt each other’s power. That fight ends in a knockout, and both of them have the power to end it with a knockout. I would favour Canelo, of course, but I’m not going to totally write off Golovkin.

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“Golovkin is still a monster and has only technically lost to Canelo. A lot of people think that he didn’t even lose that. You can’t just say, ‘Well, he’s 40.’ Scratch that.

“Golovkin is one of these guys that still has power, can still take a big punch, lives a clean lifestyle, and is coming off some impressive victories. So that’s the momentum going in his direction.

“For Canelo, maybe it’s the flipside. He’s been fighting since he was 15 years old, he’s coming off a loss, the injuries might be catching up to him, and he might be burned out.

“You can flip that coin so many ways, but I’m excited because trilogies end in knockouts, and we’re going to get a knockout in this one."