Lamont Peterson (L) and Amir Khan -December 10, 2011
The American Lamont Peterson, left, and the British Amir Khan trade blows during the 10th round of their WBA super lightweight and IBF junior welterweight title fight in Washington on Saturday. Peterson pleased his hometown crowd by prevailing via a split decision.

Boxing champion Amir Khan lost his WBA super-lightweight and IBF light-welterweight after he was defeated by Lamont Peterson in a welterweight title defense.

Referee deducted two points from Khan for pushing, which resulted the score of the fight at 113-112, 113-112, 111-114 in favour of the Peterson, according to the BBC.

Despite thrashing Peterson in first round, Amir was not able to sustain the momentum in third and seventh round, as the local fighter hit back, reported the Telegraph.

"It's like I was up against two people in there. He (Peterson) kept trying to pick me up. He kept coming in with his head, lower and lower every time. He was being effective in pressing, but I was the cleaner fighter all night. I'm ready for a rematch. I knew it would be tough in his hometown," Amir was quoted as saying by Reuters.

Telegraph reported that both the fighters fought spectacularly although Amir appeared to have an upper hand at some point of time. But Peterson bounced back effectively, giving heavy body shots to Amir.

"I wasn't worried when I was knocked down. A lot of people saw me as the underdog," Peterson was quoted as saying by Reuters.