The singles draw for the BNP Paribas WTA Finals Singapore presented by SC Global took place on Saturday afternoon at The Shoppes at Marina Bay Sands ice skating rink.
World No. 1 Serena Williams, whose participation was in doubt owing to a knee injury, made her first public appearance, and will begin her title defence in the Red group of the opening round-robin stage with Simona Halep, Eugenie Bouchard and Ana Ivanovic.
World No. 2 Maria Sharapova will face Petra Kvitova, Agnieszka Radwanska, and Caroline Wozniacki in the White Group. The top two in each group will advance to the semi-finals.
The competition starts on Monday, at the Singapore Indoor Stadium.