Serena Williams posed with fellow tennis stars ahead of a glamorous preview of next week's WTA Finals in Singapore. Serena heads the field and on Saturday at Marina Bay was placed in the red group along with Simona Halep, Eugenie Bouchard and Ana Ivanovic as fans flocked to see women's tennis current top stars. French Open champion Maria Sharapova, Wimbledon winner Petra Kvitova, Agnieszka Radwanska and Caroline Wozniacki make up the white group at the round-robin, end-of-season event. From left to right, Caroline Wozniacki, Agnieszka Radwanska, Petra Kvitova, Serena Williams, Maria Sharapova, Ana Ivanovic, Eugenie Bouchard and Simona Halep pose with the WTA Finals trophy at Gardens by the Bay in Singapore
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Stars including Serena Williams pose for glamorous unveiling ahead of next week's WTA Finals in Singapore
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Williams drawn in red group with Simona Halep, Eugenie Bouchard and Ana Ivanovic
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White group sees Maria Sharapova, Petra Kvitova, Agnieszka Radwanska and Caroline Wozniacki compete
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Russian tennis president Shamil Tarpischev referred to  Serena and Venus as 'Williams brothers'
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Russia's Davis and Fed Cup captain suspended from WTA for one year following derogatory comments
@placeholder, who made the comments on a chat show, is reported to have claimed his words were intended as a joke.