Lyndon Arthur remained unbeaten as a ninth-round stoppage of Italian Davide Faraci set up a potential rematch with British rival Anthony Yarde.
Faraci, 29, was also unbeaten heading into Saturday's light-heavyweight bout at the Royal Albert Hall.
But after a slow start, 30-year-old Arthur's power saw him take control.
Faraci was allowed to fight on after being sent to the canvas, but one more right hand from Manchester's Arthur saw the referee quickly step in to end it.
Now WBO Intercontinental champion Arthur is hoping England's footballers can also see off Italian opponents in Sunday's Euro 2020 final.
Before the fight he had spoken of "putting England 1-0 up" and, after seeing off Faraci, Arthur said: "One-nil. I said it and we did it. So let's hope the boys can go and bring it home now."
Arthur - who is now 19-0 with 13 KOs - was fighting for the first time since a split-decision victory over Yarde in December.
Yarde, 29, was set to co-headline Saturday's event against Emin Atra, but the German had to pull out. That fight may now take place next month.
A win for Yarde is likely to see him meet Arthur in the ring again next, according to promoter Frank Warren. "Both the guys have agreed to it," he said.
Dennis McCann swept away John Chuwa, of Tanzania, in two rounds to extend his unbeaten record to ten fights in what was supposed to be a bantamweight eight-rounder at the Royal Albert Hall in west London.
Chuwa did not have the size or strength to cope with McCann, who went after him from the first bell. Chuwa moved and turned and tried to get away, but while McCann was wild at times, he landed enough shots.
Midway through the second, he landed two meaty left hooks that seemed to disorientate Chuwa. McCann went for the finish trapping Chuwa in a corner and forcing referee Lee Every to call a halt at 2:06.
It was a sixth career stoppage for the 20-year-old.
Levi Frankham dominated his super-welterweight four-rounder against Gary Arrowsmith, who did well to last the distance before dropping a 40-35 decision on referee Bob Williams’s card. Frankham started positively and looked destined for a stoppage win, as Arrowsmith looked banged up after two rounds and barely threw a punch in the last two.
Former Olympian Muhammad Ali was perhaps fortunate to emerge from his six-rounder with Lee Glover with his unbeaten record intact.
The two exchanged leather from the opening bell, with Glover often landing the harder shots. But it was Ali who had his hand raised, after referee Lee Every awarded him a 59-57 decision.