Amir Khan suffered another defeat as he was stopped in round four by unbeaten American Danny Garcia in Las Vegas.
Khan was knocked down three times as Garcia claimed Khan’s WBA light-welterweight belt and held on to his WBC title.
After a strong start, Khan was floored in the third by a counter and could not recover from shots in round four.
“We got a little complacent and he took advantage,” Khan said.
“It wasn’t my night. After watching the replays a little bit I thought I was coming in with my hands down.
“I respect Danny, he was countering very well against me.”
Garcia, 24, said: “We knew Khan was going to come out fast because he thought I had no power but I waited and stepped up to use the power and speed I have, and it worked.
“I was going to fight until the death, just like he did. Now I want to continue to fight the best.”
Before the bout Khan was tipping a match with Floyd Mayweather, but this defeat casts significant doubt on his plans of moving up to the welterweight division.