Bradley Pryce took a heavy beating from eventual champion Prince Arron in the semi-finals of the Prizefighter light-middleweight tournament in London.
Event favourite Pryce, 28, had claimed a hard-fought revenge points win over Neil Sinclair in the first round.
But the lanky Arron eased to a points win, using his superior reach to telling effect at the York Hall.
Droylsden's Arron, 22, went on to outpoint Birkenhead southpaw Brett Flournoy in the final.
"All respect to Bradley Pryce, he was a really good fighter but maybe he is on his way down and after the first round I was beating him up," said the 6ft 3in Arron.
"It's absolutely out of this world. I came here to win it and after beating Bradley I knew I'd got the competition won.
"Brett was a bit awkward with his southpaw stance, but in the third round I came to life and got the victory."
The innovative, one-night tournament saw eight men competing in four quarter-finals of three rounds. The winners advanced to the semi-final and then the final, each bout over three rounds.
Flournoy beat previously unbeaten Londoner Steve O'Meara on a split decision in his semi-final.