Donegal's Jason Quigley produced an explosive display to defeat Puerto Rican fighter Jorge Melendez in LA on Saturday night to keep his flourishing pro career on the rise.
The 25-year-old was appearing on the undercard of Bernard Hopkins' bout with Joe Smith Jr, and wasted no time in bringing his middleweight record to 12-0.
He unleashed a flurry of body shots from the first bell and knocked his opponent down twice before Melendez's corner threw in the towel after just two minutes and 24 seconds.
Quigley has now recorded ten knockouts in 12 contests.
American boxing great Hopkins ended his fight career sprawled on the floor outside the ring as the 51-year-old lost to Smith Jr in Inglewood.
Hopkins bowed out by accusing Smith Jr of pushing him towards the ropes in the eighth round before he tumbled through and landed unceremoniously.
The man who reigned as a middleweight world champion from 1994 to 2005, beating Oscar De La Hoya along the way, suggested Smith had let frustration get the better of him so had bent the rules.