American Lamont Peterson stunned Britain's Amir Khan, winning a majority decision to take the International Boxing Federation and World Boxing Association light-welterweight world titles. Referee Joe Cooper took two points from Khan during the bout for shoving Peterson and they proved to be the margin of the Englishman's defeat. One judge saw Khan a 114-111 winner while the other two judged Peterson the victor by scores of 113-112, giving him the triumph. Hometown hero Peterson, once a homeless youth living on the streets of the US capital, improved to 30-1-1 before a sellout crowd at Washington Convention Center while Khan fell to 26-2 with his eight-fight win streak snapped. Two days after his 25th birthday, Khan suffered his first loss since falling to Colombian Breidis Prescott in 2008.