Daniel Dubois and Fabio Wardley are very different characters but, in the ring, they share a knockout ratio of 95% in the combined 42 fights they have won. The unbeaten Wardley has knocked out 19 opponents in his 20 victories while Dubois has stopped 21 of 22 vanquished rivals. It’s an impressive statistic which belies the vulnerability at the heart of each man.

Wardley, the WBO world heavyweight champion, comes from a white-collar boxing background with minimal experience as an amateur. The only blemish on his record is a draw in March 2024 with the Olympic medallist Frazer Clarke – who he then knocked out with shocking brutality in the first round seven months later. But Wardley was also comprehensively outboxed by Justice Huni last summer before rescuing himself from a shutout defeat by separating the tricky Australian from his senses in a dramatic 10th round. The 31-year-old has often looked to be in trouble against more skilful rivals before his power obliterates the gulf in experience or ringcraft.

Dubois, meanwhile, has suffered three losses, to Joe Joyce and twice to Olekansdr Usyk, the best heavyweight on the planet. Each time he has come back from a crushing defeat with renewed determination but a fourth setback on Saturday night would be a serious blow to the complex Dubois – who, in contrast to his concussive force as a knockout merchant, cuts a strangely reticent figure outside the ring.

The 28-year-old Dubois has lived much of his life beneath the shadow of his father, Stan, who home-schooled the boxer and his siblings. Dubois still lives with his dad – known to many as Dave – and they were both criticised for holding a party in the family home hours before he was knocked out by Usyk last July.

In the messy aftermath Dubois left his trainer, Don Charles, who had been quietly sceptical of the revelry before such an important world title fight. Stan Dubois steered him towards Tony Sims’s gym but it did not take long for them to return to Charles – the one trainer who seems to understand the dynamic that exists between a supremely confident father and a shy and hesitant son.

Charles told me that he “used diplomacy and psychology” to guide Stan’s influence over Daniel and that “the father’s voice” is the one his fighter responds to most positively. It remains a complicated scenario and yet more questions will be asked about the Dubois camp if Wardley prevails.

Wardley, unlike Dubois, is extremely articulate and composed. He is also a sensible man who accepts that he has achieved far more in boxing than he or anyone else ever expected. In the past he has been able to approach each new testing fight as an encounter in which he has little to lose. But with every win his aspirations increase and Wardley is now calling openly for a world heavyweight title unification contest against Usyk.

It is striking that, when presented with a shortlist for this first defence of his WBO title, Wardley could have chosen easier opponents in Filip Hrgovic and Jared Anderson. Instead, in a selection which tells us much about his positive mindset, Wardley opted to face Dubois who has a thunderous jab, decent movement and frightening power.

Shane McGuigan, who used to train Dubois, has suggested that “the biggest problem is Daniel’s mindset. If he can get it into his head that has to win it on the jab, he can make it very comfortable. But he will go straight for [Wardley] and that will mean he’ll either knock him out, or get knocked out.”

Derek Chisora, the old heavyweight warhorse, has said: “I see Fabio winning it. Fabio’s tough. Fabio hasn’t got boxing skills; what he has is fucking heart, bro.”

But David Haye, another former heavyweight, has warned Wardley that this fight “might be the one where he finds out what pro boxing is all about. Dubois, if he is firing on all cylinders, could end up causing some damage and knocking out Wardley bad.”

The uncertainty and intrigue makes this bout far more interesting than the belated showdown between Tyson Fury and Anthony Joshua. That extravaganza will generate hundreds of millions of pounds, and be wildly overhyped, but a more primal encounter awaits in Manchester.

Wardley, for once in a big fight, will enter the ring as the marginal favourite. He is the more assured man who can draw on great reserves of resolve and self-belief. But so much will depend on whether Dubois can control the demons in his own mind and fight with discipline and determination. It will be a night fraught with danger and risk for both men.