Madison Keys of U.S. competes during the WTA Finals round robin match against Dominika Cibulkova of Slovakia at Singapore Indoor Stadium, Oct. 25, 2016. Madison Keys won 2-0. (Xinhua/Then Chih Wey)
Madison Keys of U.S. competes during the WTA Finals round robin match against Dominika Cibulkova of Slovakia at Singapore Indoor Stadium, Oct. 25, 2016. Madison Keys won 2-0. (Xinhua/Then Chih Wey)