Peterson then becomes the new world light - welterweight champion in Washington . Local favorite Peterson defeats British champion Amir Khan on a split points decision . but I followed my game plan the entire time and it worked . It was a controversial decision , after Khan was awarded two points for pushing .
Peterson then becomes the new world light - welterweight champion in Washington . Local favorite Peterson defeats British champion Amir Khan on a split points decision . It was a controversial decision , after Khan was awarded two points for pushing .