In pics: 2017 WTA Wuhan Open day 4

Wang Qiang (R) and Wang Yafan of China compete during the doubles first round match against Xu Yifan of China and Gabriela Dabrowski of Canada at 2017 WTA Wuhan Open in Wuhan, capital of central China's Hubei Province, on Sept. 25, 2017. Wang Qiang and Wang Yafan retired in the second set due to Wang Qiang's injury.(Xinhua/Mao Siqian)