SINGAPORE - OCTOBER 26:  Serena Williams of USA with the Billie Jean King trophy next to runner up Simona Halep of Romania, Chris Evert, Billie Jean King and Mellisa Pine after the final during day seven of the BNP Paribas WTA Finals tennis at the Singapore Sports Hub on October 26, 2014 in Singapore.  (Photo by Julian Finney/Getty Images)