The 16 year old swimmer from China has won two gold medals in London 2012 Olympics. The allegation of doping was initiated by American coach John Leonard who described Ye Shiwen's performance in 400m Individual Medley as 'disturbing' because she swam the last 50 meters faster than men.

However, she has been drug tested and came out clean. Amid the suspicion and criticism, she stayed calm and won her second medal in 200m Individual Medley.Source: http://www.guardian.co.uk/