The major talking point from the first contest between Oleksandr Usyk and Daniel Dubois was a shot that landed in Round 5 on the belt of the unified heavyweight champion.

Dubois whipped in a right to the body and Usyk dropped to his knees in agony. The shot, which some say was low, some say was above board, was immediately ruled illegal by the referee. Usyk took his time to recover from the shot, around three minutes, 45 seconds to be exact, and then eventually went on to stop Dubois in Round 9.

After the contest, Dubois’ team made the argument that the fight should have ended in Round 5. They believe the punch was a legitimate body shot and that Usyk should have been counted out by the referee. Warren, Dubois’ promoter, launched an appeal with the WBA, whom Dubois had earned his shot at Usyk with, but it was rejected.

Now the pair will meet again, this time in London at the Wembley Stadium for the undisputed heavyweight championship. Heading into the contest, Warren told select members of the media that he would be having a conversation pre-fight with the sanctioning bodies over what constitutes a low blow.

“It would be under the four governing bodies – we'll sit down with the four of them,” Warren said. “I can assure you we'll have a good conversation [about low blows].”

Warren then whipped out two pieces of A4 paper picturing the low blow that has caused so much controversy, and said: “He huret Usyk with that shot, I don't kid anyone, this comes from The Sun, not from me. These punches are not below the belt. The rule says the navel, that's what, these are… That's a sequence of punches. But, you know, it doesn't matter. You can't change it. What's done is done. But [Dubois] has learned from it.”

But what has Dubois learnt from the first fight exactly? Warren had some advice for the young heavyweight after the contest.

Warren said to Dubois: “‘Fuck the referee,’ in these fights, at this level, when you're in the other guy's backyard, in Poland, which has a big Ukrainian presence, ‘When you're in there, that's your referee, that's your judge, you go out there, you've got to impose yourself.’ He'd lost all his momentum, if he could jump on him, who knows what would happen, but he hurt him, and I know he can hurt him.”

Warren believes that Dubois identified a weakness in Usyk’s game that night in Poland. The Hall of Fame promoter has picked up on something which was first spotted when Usyk was dropped by a body shot from Artur Beterbiev at the 2011 World Amateur Boxing Championships.

“I've studied him, I know him better than his trainers do,” said Warren. “Now, we watched his fights, going back to his amateur fights, he doesn't like it to the body at all. He doesn't like it. I was looking today, he's much bigger now. He’s filled out more, he's like a solid heavyweight. You see, the one thing about Daniel, if he hits you in the arm, it hurts you. And that's what he does, he takes that fight out of you.”