WTA Championships begin tomorrow

The Championships begin tomorrow in Istanbul. Here is the draw for singles round-robin play:

RED GROUP
Caroline Wozniacki
Petra Kvitova
Vera Zvonareva
Agnieszka Radwanska

WHITE GROUP
Maria Sharapova
Victoria Azarenka
Li Na
Samantha Stosur

Note: Maria Sharapova has a 9-0 record against Sam Stosur, and Stosur has a 5-0 record against Li.