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LONDON, ENGLAND - AUGUST 04: Yang Sun of China reacts after winning the Men's 1500m Freestyle Final on Day 8 of the London 2012 Olympic Games at the Aquatics Centre on August 4, 2012 in London, England. Sun recorded a World Record time for the event with a time of 14:31.02. (Photo by Clive Rose/Getty Images)

LONDON, ENGLAND - AUGUST 04:  Yang Sun of China reacts after winning the Men's 1500m Freestyle Final on Day 8 of the London 2012 Olympic Games at the Aquatics Centre on August 4, 2012 in London, England. Sun recorded a World Record time for the event with a time of 14:31.02.  (Photo by Clive Rose/Getty Images)