British promoter Frank Warren is confident in many things - and one of them is the ability of Deontay Wilder or Tyson Fury to close the show on Anthony Joshua.

Joshua has been stung in several fights, but fighter has been able to put him away. Joshua has been able to weather the storm in every occasion. Most recently, he was tagged hard in the first round of his mandatory defense against Alexander Povetkin, who was knocked out in the seventh round.

“If that had been Wilder catching him on the chin, or even Tyson catching him on the chin, do you think they’d have let him off the hook? The answer to that is no. He’s got a big punch. He was behind in that [Povetkin] fight in my opinion, I still like him as a fighter. But I don’t look at what fighters are good at doing, I look at what are doing badly or what their flaws are. And his flaw is you can catch him with a right hand. He’s not hard to hit,” Warren told Boxing News.

Fury will challenge Wilder for the WBC world title on December 1st at Staples Center in Los Angeles.

The winner of that contest will be the main opponent for Joshua, who holds the WBO, IBO, WBA, IBF world titles.

Warren believes Joshua has a shaky defense, and the wrong trainer to fix that flaw.

“I know a lot of people have a lot of respect for Rob McCracken. I don’t think he’s with a trainer who’s great at teaching boxers defence. Carl Froch didn’t have a great defence. Look at his nose. He didn’t have a great defence. He had a great chin. Anthony Joshua’s been clipped in every fight he’s ever had,” Warren claimed. “[Carlos] Takam clipped him, every one of them and he got clipped again [against Povetkin] the first round and in the second before he knocked him out. He’s got a big heart. He’s got a big punch,” Warren said.