Stan Wawrinka of Switzerland reacts during the semifinal match of men's singles against Kei Nishikori of Japan at the 2016 Rogers Cup in Toronto, Canada, July 30, 2016. Stan Wawrinka lost 0-2. (Xinhua/Zou Zheng)
Stan Wawrinka of Switzerland reacts during the semifinal match of men's singles against Kei Nishikori of Japan at the 2016 Rogers Cup in Toronto, Canada, July 30, 2016. Stan Wawrinka lost 0-2. (Xinhua/Zou Zheng)