Highlights of women's singles round of 16 match of 2019 WTA Shenzhen Open

Wang Xiyu of China returns a shot during the women's singles round of 16 match against Elise Mertens of Belgium at WTA Shenzhen Open tennis tournament in Shenzhen, south China's Guangdong Province, Jan. 7, 2020. (Xinhua/Mao Siqian)