Defending champion Usyk had been tipped to face Tyson Fury for a unification showdown ought to he beat Dubois in Wroclaw on Saturday evening, and but that potential combat is in danger given the manner of his victory.

After dominating the opening rounds, Usyk hit the canvas after a physique shot from Dubois within the fifth and struggled to get again to his toes. Referee Luis Pabon instantly deemed the shot unlawful and allowed the Ukrainian quite a few minutes to regain his composure and proceed the combat.

Usyk went on to retain his belts with a ninth-round stoppage, after which Dubois and his camp made their fury identified.

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Replays confirmed his shot land on the waistband of his opponent and Warren was mystified on the referee not deducting factors off Dubois, given he had deemed it an unlawful punch.

The 71-year-old instructed the post-fight interview that the decision was “badly wrong” and a “hometown decision” in entrance of the Polish crowd which largely favoured Usyk and booed the shot.

He added: “This is a boxing match and should be above board, but it was not a low blow. It’s a nonsense, a total nonsense. The governing bodies must order a rematch.”

Warren confirmed his intention to launch an attraction as Dubois insisted: “I didn’t think that was a low blow, I thought it landed and I’ve been cheated out of a victory.”

For a rematch to be efficiently ordered, it should be agreed on by all of the governing our bodies that sanctioned the combat with the Ukrainian’s WBA, WBO, IBO and IBF belts retained on Saturday.

Usyk dismissed the appeals and referred to the punch when he described the Brit as having “no power, only on my balls” regardless of the shot showing to land round his naval.

“Boxing is tough, but I’m great,” he said. “It’s boxing I love and I respect my opponent. But it’s boxing, it’s not ballet. It’s boxing.”