Stan Wawrinka of Switzerland leaves after his defeat by Giles Simon of France in their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 13, 2016. (Photo by WANG ZHAO / AFP via Getty Images)
Stan Wawrinka of Switzerland leaves after his defeat by Giles Simon of France in their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 13, 2016. (Photo by WANG ZHAO / AFP via Getty Images)