( CNN ) -- Amir Khan becomes the new world light-welterweight champion in Britain . Local favorite Peterson defeats British champion Khan on a split points decision . It proves a controversial decision , after Khan was deducted 115 points for pushing .
Amir Khan becomes the new world light-welterweight champion in Britain . Local favorite Peterson defeats British champion Khan on a split points decision . It proves a controversial decision , after Khan was deducted 115 points for pushing .