WBC champion Tyson Fury produced a stunning one-punch stoppage in the sixth round to beat fellow Briton Dillian Whyte and then insisted he will retire from boxing.
Fury dominated what was a scrappy bout and then unleashed a vicious right uppercut.
Whyte, admirably, got to his feet within the count before staggering into the referee as the fight was halted.
“This might be the final curtain for the Gypsy King,” Fury said post-fight.
He added later: “I’ve spent a lot of time on the road. I’ve been away for a long time. I fulfilled everything I’ve ever wanted to fulfil.
“I will retire as only the second heavyweight in history, after Rocky Marciano, to retire undefeated. I was unbeatable at this game.”
Fury – who also retained his Ring Magazine belt – is unbeaten in 33 bouts, while Whyte – suffering his third loss in 31 fights – fell short on his first attempt at a world title.
If Fury does decide to hang up the gloves, the 33-year-old will miss out on an opportunity to fight for the undisputed crown – a fight which could potentially be staged later this year – and a chance to cement his status as Britain’s greatest ever heavyweight.
“I promised my wife that would be it after the [Deontay] Wilder fight,” he added. “But I got offered a fight at Wembley and I owed it to the fans. What a way to go out.”
Fury’s wife Paris told BT Sport: “I would like him to come out now. He has nothing more to prove. If he had anything left to do, I would say ‘Yeah Tyson, you do it’. But he has nothing to prove.
“For Tyson to keep boxing, it just seems for one reason and I know in my heart, I think the only reason that Tyson will come back is for the unification fight.”