Joe Joyce battered Lenroy Thomas for two rounds, flooring him three times, to become Commonwealth heavyweight champion on Saturday.
David Haye's protégé Joyce broke a 106-year record by claiming the belt in his fourth pro fight, having won an Olympic silver medal in 2016.
Joyce, decked out in Mexican colours for Cinco de Mayo, overpowered Thomas physically from the first bell. The quantity of punches thrown by the Brit was a difficult puzzle for his visitor to solve, and he looked flummoxed after a couple of minutes.
Joyce swaggered forwards, sometimes with his hands down, throwing punches at will - it wasn't always pretty but it was effective, and overwhelmed Thomas.
The Jamaican, who has boxed Doncaster's Dave Allen twice, was down at the conclusion of the first round after a body shot hurt him.
Joyce had 27-fight veteran Thomas down for a second time after brutalising him with a flurry of punches in the corner.
The fight ended with Joyce instigating a trade in the centre of the ring, and Thomas slowly wilted to the canvas, unable to get back up.