Aryna Sabalenka (L) of Belarus signs for spectators after winning singles quarterfinal match against Dominika Cibulkova of Slovakia at the 2018 WTA Wuhan Open tennis tournament in Wuhan, central China's Hubei Province, on Sept. 27, 2018. Aryna Sabalenka won 2-0. (Xinhua/Xue Yubin)