There are too many factors working against Kell Brook for Errol Spence Jr. to give him a legitimate chance to upset Terence Crawford.

Brook’s fight with Spence was competitive before Spence began breaking him down on his way to an 11th-round knockout victory in May 2017. Spence suspects Crawford will have an even easier time beating Brook because Brook hasn’t boxed at the 147-pound limit since Spence stopped him almost 3½ years ago in Sheffield, England, Brook’s hometown.

Spence assessed the Crawford-Brook bout, scheduled for Saturday night in Las Vegas, as part of a recent appearance on “The Last Stand Podcast, With Brian Custer.”

“I don’t know,” Spence told Showtime’s Custer. “I mean, Kell Brook hasn’t been at 147 since he fought me. You know, and I guess it was a struggle for him to make 147 at that time, too. So, it’s a struggle for all of us, but definitely a struggle for him. And I heard he only had like seven, eight weeks to train. You know, usually training camp like 12 weeks. … And I heard that his trainer left him, too. Or his trainer not gonna be with him.

“I don’t know if that’s true or not. His trainer’s not gonna be with him, either. So, I mean, it’s really up to, you know, if Kell Brook feel like he’s up for the fight. You know, I feel like, you know, experience-wise, it’s a good fight. But I just feel like Terence Crawford is gonna beat him up. I just feel like he’s gonna win.”

Brook informed BoxingScene.com last week that longtime trainer Dominic Ingle’s COVID-19 concerns caused Brook to seek a new trainer for the Crawford fight. The 34-year-old Brook has been working with trainer Carlos Formento for the first time in advance of his shot at Crawford’s WBO welterweight title.

The 33-year-old Crawford (36-0, 27 KOs), a three-division champion from Omaha, Nebraska, is consistently listed as at least a 14-1 favorite to beat Brook, a former IBF welterweight champ.

ESPN will televise their 12-round, 147-pound championship match as the main event of a three-bout broadcast in the United States (10 p.m. EST; 7 p.m. PST). Premier Sports 1, a premium cable channel, will begin its Crawford-Brook coverage early Sunday morning in the United Kingdom (12:30 a.m. GMT).

Spence, meanwhile, is busy preparing for his own welterweight title fight December 5 in Arlington, Texas. The 30-year-old Spence (26-0, 21 KOs), of DeSoto, Texas, will defend his IBF and WBC belts that night against Philadelphia’s Danny Garcia (36-2, 21 KOs) in a FOX Sports Pay-Per-View main event at AT&T Stadium.

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