Daniel Dubois, the WBO heavyweight world champion, believes he would defeat Oleksandr Usyk if they had a trilogy fight.
Twice Dubois has boxed the imperious Ukrainian, and twice Usyk, an unbeaten and two-time undisputed champion at heavyweight, has stopped the Londoner.
But after a stunning two-round victory in his rematch with Fabio Wardley on Saturday, Dubois is convinced he has reached a new level and can beat Usyk.
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No heavyweight, Dubois is adamant, can stand up to the punches he hit Wardley with.
"No. Fabio's got a great chin. He's known for taking punishment but I was going through him. I just had to pull myself back and reset. I want to know who's next!" Dubois declared.
He would welcome a potential trilogy fight with Usyk. "Definitely, definitely, I'd love that," Dubois said. "We're coming out on top this time. We've made our mistakes and we're coming out on top."
Promoter Frank Warren said: "Daniel in my opinion he's not the same fighter he was even a year ago. He's a totally different fighter now.
"When he's doing what he's doing at his best, you've got to be some fighter to be standing and being able to take those shots. He's a tremendous puncher. When he gets you in trouble, you are in trouble. He's a good finisher."
Usyk vacated all the world titles he held, allowing Dubois to claim the WBO belt ahead of his first fight with Wardley, Filip Hrgovic to pick up the IBF strap after beating Moses Itauma, and Agit Kabayel to be elevated to WBC heavyweight world champion.
Next year Dubois is looking to add more championships to his collection. "I've heard talk about Kabayel but I'll fight whoever's next in line. Whoever pays the most cash," Dubois said.
"The future's looking bright."
Promoter Frank Warren thinks it will take 18 months for a new undisputed champion to be crowned, but expects a wave of heavyweight unifications to get under way in next year.
"I think it'll happen in about 18 months because of the timings of it all," Warren said. "We will make them as soon as we can, I expect in the first quarter we'll have at least one of those unifications on. If we get it on, somebody's going to be holding two belts.
"Filip's got a mandatory against [Frank] Sanchez," Warren noted. "We've got Agit, who's fighting in November in Germany and we've got Tyson [Fury] and AJ fighting in December [for the WBA 'super' title]. So they're all busy but we'll be out, don't worry about that.
"The good thing about it is everybody wants to fight. They're fighting men.
"We want the best fighting the best to find out who is the best," the promoter continued. "Get Usyk back in it.
"There's all sort of permutations. One thing for sure is 2027 is going to be a phenomenal year.
"[Dubois] wants the four belts. So do all the other guys. That's what's going to be so exciting."