The mystery surrounding Peng Shuai: Why the Grand Slam doubles champions is at the centre of a growing row that draws in the worlds of sport and international relations. The Grand Slam doubles champion dropped from public view after alleging on social media in November that she was sexually assaulted by a senior Chinese official, in a post that was swiftly removed. The WTA has been unable to gain proof that Peng is free of censorship and coercion and has suspended tournaments in China.