China's Deng Linlin won gold on the beam at the London Olympics with a score of 15.600.
China's Sui Lu claimed silver with 15.500 with Alexandra Raisman of the US taking bronze with 15.066.
Raisman originally finished fourth but jumped ahead of Romania's Catalina Ponor when the US made an official enquiry and the judges changed the difficulty score to lift the American onto the podium.