ATP Mexican Open: Nick Kyrgios advances to semifinals

Stan Wawrinka of Switzerland reacts during the men's singles quarterfinal match between Stan Wawrinka of Switzerland and Nick Kyrgios of Australia at the 2019 ATP Mexican Open tennis tournament in Acapulco, Mexico, on Feb. 28, 2019. Nick Kyrgios won 2-1. (Xinhua/Xin Yuewei)