‘War’ Chisora was in a typical mischievous mood; he repeatedly swore as he predicted a “one-round” knockout.

Host Adam Smith was forced to frequently interrupt and apologise to viewers for the bad language, but Chisora did not relent, at one point encourgaing chants from the crowd.

Despite 13 losses against elite opposition – including Vitali Klitschko, Oleksandr Usyk, and three bouts with Tyson Fury – Chisora has built a loyal fanbase through his quirky personality and relentless, come-forward style.

“Boxing is so easy: it’s put your hands up and hit the other guy. That’s it,” he said.

A loss for Wilder would also likely spell the end of his career.

Arriving 45 minutes late and apologising for his “tardiness”, the American made a bizarre plug for a brand of mouthguard before repeating previous comments about needing to “heal” from personal issues and past losses.

Once regarded as boxing’s most devastating puncher, the former WBC heavyweight champion has stopped 43 opponents in 44 wins, often in spectacular fashion.

“What happens when a warrior comes against a freak of nature? Derek comes to fight, but I’m coming with detonation,” Wilder said.

However, the “Bronze Bomber” has lost four of his past six fights. Since his punishing trilogy with Tyson Fury – a rivalry that saw him knocked down five times and stopped twice – Wilder has struggled to rediscover his destructive form.

“I know when I hang up the gloves, people will miss me,” he said. “When I say I’m gone, I’m gone. So enjoy me while I’m here.”