View : London 's Ye wins second gold in London Saturday in 200 m individual medley . 16-year-old beat 400 m individual medley world record by a second on Tuesday . John Leonard called Ye Shiwen 's swim 'unbelievable ' and 'disturbing ' IOC spokesman calls doping allegations 'sad ' and 'pure rumor '
London 's Ye wins second gold in London Saturday in 200 m individual medley . 16-year-old beat 400 m individual medley world record by a second on Tuesday . John Leonard called Ye Shiwen 's swim 'unbelievable ' and 'disturbing ' IOC spokesman calls doping allegations 'sad ' and 'pure rumor '