James Tennyson needed just two rounds to defeat Atif Shafiq in London.
After a blistering start, the Belfast lightweight had his opponent pinned against the ropes and landed a flurry of shots before a telling left hook sent Shafiq to the ground, with the referee immediately calling the fight.
Tennyson, 26, moved up from super-featherweight following a title defeat by Tevin Farmer last October, and has now stopped all three of his opponents in his new weight.
This win follows successful bouts against Garry Neale and Brayan Mairena earlier this year.
"I just had to be patient," Tennyson said.
"Super-featherweight days are long gone, I made the weight comfortably and felt good."
Tennyson was fighting on the undercard of Saturday night's headline bout between Luke Campbell's and Vasily Lomanchenko at the O2 Arena.
