Mark Thornton needed just 77 seconds to secure victory over Freddie Yemofio at Streatham.
The Horsham light-middleweight knocked down his opponent twice in their scheduled four-rounder at Streatham.
He said: "I enjoyed that. I had a game plan and it worked. I jumped on him straight away and didn't give him the chance to settle."
Yemofio (Hayes), a southpaw, came out aggressively but walked on to a right clip to the side of the head and went down. He jumped up quickly but referee Richie Davies correctly counted to eight. He was then caught by a left hook and went down again, pulling Thornton over with him.
Yemofio was up at two but was caught again and referee Davies waved it off.
Sorry Thomas
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