Oleksandr Usyk is the genius of this boxing generation and he delivered not only a masterclass but also a brutal caning of his latest English pupil to restore his briefly interrupted reign as undisputed heavyweight champion of the world.

Daniel Dubois was reduced to a sprawling, bumbling wreck on the floor at Wembley without winning even one of the preceding four rounds. A very big boy lost. Totally bewitched, utterly bewildered, helplessly bedazzled by a great of the noble art.

The 27-year-old pretender bowed to the master more than a decade older in what is supposed to be a violent pursuit for young men.

The end was as magnificent as it was petrifying to watch. Having boxed the ears off the giant Londoner from the first bell, he unleashed hell to finish him off. Usyk rode a desperate Dubois right cross, like he had its forlorn predecessors, and spattered him with fistful of counter-punches.

It was over even though Dubois wobbled to his feet. Execution by way of near-lethal blows to the sagging head sent Triple D crashing into near oblivion. Ten and out.

No more world titles to add to the one he brought to the night of his own destruction. No undisputed crown. Not even unified with any of the collection already in Usyk’s possession.

The 90,000 crowd supplied its own consolation with its adulation of Oleksandr the Great. Sportsmanship still lives on these shores.

Everyone in attendance knew they had been privileged to see a supreme technician and deadly finisher at work. Worship him while we can.

Usyk included Tyson Fury for a trilogy, Derek Chisora and the rejuvenated kiwi Joseph Parker to be next to climb the scaffold as he moves closer to 40, saying: ‘Thirty-eight is not old. I love you Wembley and I’ll be back.’

For Dubois there is no shame in defeat by this legend. He too will return by rebuilding.

A sudden squall of heavy rain greeted the advance guard of Wembley’s 90-odd thousand. The precipitation ceased long before the main event. But the first of the undercard fighters felt the spray blowing under the giant canopy.

At moments like this, and on other nights when those of us close to ringside or in the pitch-level seats have been drenched, you do have to question whether this really is the best stadium in the world since it doesn’t have a complete roof.

But there was no dampening the electricity generated by the rousing English sports fans — in company with the London boys on a big Saturday night out.

Up went the fireworks, down came the roars, in came the gladiators. Dubois bounced out first, carrying the additional muscularity built up by a stone or so since he lost the first fight with Usyk in Poland two years and three redemptive victories ago. Presumably in a bid to amplify his natural- born heavyweight bulk advantage over the former cruiserweight.

Usyk’s entry was greeted by at least as many cheers as boos, such is the respect throughout the world for this master of boxing and the heroism of the Ukrainian people in their war with Russia.

Much of the debate swirling around this fight concerned whether Dubois had closed the class gap on Usyk in the interim.

The bookmakers doubted that. They widened the odds against Dynamite Daniel detonating a knockout blow to 9-1. Dubois was shown on the giant screens in deep conversation with his team in his dressing room. Then on came Usyk, a devout Orthodox Christian, receiving a blessing from his spiritual adviser.

Everyone seemed nervous. The tension was eased by a lusty communal singing of what has become sport’s anthem, Sweet Caroline. If anything Usyk received a more reverential welcome to the ring than the local boy who had already made good on his dream of becoming a world champion. Dubois had threatened to throw the kitchen sink at him but he was somewhat out of range at the start and picked off by the razor sharp Usyk. There was meatier menace in the Dubois lunges but Usyk was not to be found as easily as Anthony Joshua when Dynamite blew him away.

Dubois enjoyed some success at the start of the third but three or four dazzling combinations sent his sweat flying as another round slipped away in Usyk’s favour. In the fourth, Dubois seemed to have forgotten about the weakness in the Usyk body he’d exposed with that debatable low blow in the first fight.

Usyk delivered the fifth-round knockdown with laser ferocity. Two lefts and a right for the first dropping to the canvas. A veritable barrage to finish the young man off. Wow.