
Agnieszka Radwanska of Poland competes during her match against Simona Helep of Romania at the WTA finals tennis tournament in Singapore, on Oct. 29, 2015. Radwanska won 2-0. (Xinhua/Then Chih Wey)

Agnieszka Radwanska of Poland competes during her match against Simona Helep of Romania at the WTA finals tennis tournament in Singapore, on Oct. 29, 2015. Radwanska won 2-0. (Xinhua/Then Chih Wey)