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

Kristyna Pliskova of the Czech Republic serves during the women's singles round of 16 match of 2019 WTA Shenzhen Open tennis tournament against Aryna Sabalenka of Belarus in Shenzhen, south China's Guangdong Province, Jan. 7, 2020. (Xinhua/Mao Siqian)