Serena Williams (1st R) of the U.S. and U.S. tennis icon Billie Jean King (2nd R) attend the awarding ceremony after the women's singles final match of WTA Finals against Romania's Simona Halep at the Singapore Indoor Stadium on Oct. 26, 2014. Serena Williams won 2-0 to claim the champion. (Xinhua/Then Chih Wey)