In pics: WTA Shenzhen Open tennis tournament

Kristyna Pliskova of the Czech Republic returns the ball during the first round match against Jelena Ostapenko of Latvia at the WTA Shenzhen Open tennis tournament in Shenzhen, south China's Guangdong Province, Jan. 2, 2018. Pliskova won the match by 2-0. (Xinhua/Mao Siqian)