For Fury, ‘unbeaten’ refers to more than his success in the ring. He refused to be beaten by a mental illness which almost drove him to suicide in the summer of 2016. He refused to give in after ballooning up to 400lbs due to a diet which consisted of “18 pints followed by whiskey and vodka, pizzas and kebabs.” And he refused to accept pundits’ claims that he was finished as a fighter when he was stripped of his British Boxing Board of Control licence and faced a lengthy suspension for breaching anti-doping rules.

What changed to turn the baddest man on the planet into an overweight, unmotivated former fighter? And what changed to turn that overweight, unmotivated former fighter into the fit, driven, smiling contender that we see before us on fight week?

The answer to the first question is mental health problems. The answer to the second is the acknowledgement of those same issues.

Thankfully, the conversation about mental health is as open as it’s ever been in this day and age but there remains a stigma about that subject in certain cultures like combat sports, whose foundations are based in machismo and the expression of inner turmoil via conflict.

Whether male or female, fighters still have an unhelpful tendency to hide any semblance of weakness from even their gym-mates and given the fact that most high-profile trainers are believers in ‘the school of hard knocks’, progress must be made in the changing rooms of boxing, kickboxing and mixed martial arts gyms because a sincere “how are you?” from a training partner can literally be the difference between life and death.

Tyson Fury is fighting for this change to be made because, as he so eloquently put it in the build-up to the most important night of his life: “If mental health can bring somebody as big and strong as me to my knees then it could bring anybody to their knees.”

Standing 6ft 9in tall and weighing around 255lbs since his remarkable weight loss journey, Fury would have been forgiven for seeing himself as invincible because he has yet to meet his match in the ring. But mental health problems hit him harder than any fist ever did or ever could.