US swimmer Michael Phelps poses with a trophy from FINA acknowledging his achievement in the Olympic history after competing in men's 4x100 medley relay contest, at London 2012 Olympic Games in London, Britain, on August 4, 2012. [Xinhua]
US swimmer Michael Phelps poses with a trophy from FINA acknowledging his achievement in the Olympic history after competing in men's 4x100 medley relay contest, at London 2012 Olympic Games in London, Britain, on August 4, 2012.