Serena Williams (3) def. Victoria Azarenka (1), 6-4, 6-4
Li Na (8) def. Angelique Kerber (5), 6-4, 6-3
Sara Errani (7) def. Samantha Stosur (9), 6-3, 2-6, 6-0

Victoria Azarenka (1) vs. Li Na (8)
Maria Sharapova (2) vs. Samantha Stosur (9)
Agnieszka Radwanska (4) vs. Sara Errani (7)