Serena Williams (1) def. Michelle Larcher De Brito 6-0, 6-4
Caroline Wozniacki (3) def. Tathiana Garbin 6-1, 6-1
Kaia Kanepi def. Samantha Stosur (6) 6-4, 6-4
Agnieszka Radwanska (7) def. Melinda Czink 6-3, 6-3
Na Li (9) def. Chanelle Scheepers 7-6 (7-5), 6-2
Flavia Pennetta (10) def. Anabel Medina Garrigues 6-4, 6-0
Victoria Azarenka (14) def. Mirjana Lucic 6-3, 6-3
Maria Sharapova (16) def. Anastasia Pivovarova 6-1, 6-0
Aravane Rezai (18) def. Magdalena Rybarikova 6-7 (8-10), 6-2, 7-5
Svetlana Kuznetsova (19) def. Akgul Amanmuradova 6-2, 6-7 (5-7), 6-4
Jie Zheng (23) def. Pauline Parmentier 7-5, 6-4
Daniela Hantuchova (24) vs. Vania King 6-7 (4-7), 7-6 (7-4)
Dominika Cibulkova def. Lucie Safarova (25) 7-6 (7-5), 6-4
Anastasia Pavlyuchenkova (29) def. Iveta Benesova 6-3, 6-4
Alexandra Dulgheru (31) def. Kimiko Date Krumm 6-2, 6-7 (3-7), 6-1
Sara Errani (32) def. Julie Coin 6-2, 6-4
Kurumi Nara def. Mariana Duque Marino 6-4, 6-2
Edina Gallovits def. Timea Bacsinszky 4-6, 7-5, 6-3
Barbora Zahlavova Strycova def. Elena Vesnina 6-1, 6-3
Anna Chakvetadze def. Andrea Petkovic 3-6, 6-4, 6-4
Anastasia Rodionova def. Anne Keothavong 3-6, 6-2, 6-4
Petra Kvitova def. Sorana Cirstea 6-2, 6-2
Ioana Raluca Olaru def. Alize Cornet 5-7, 6-4, 6-4
Arantxa Rus vs. Kai-Chen Chang 0-6, 6-2, 3-3
Alberta Brianti def. Jill Craybas 6-2, 7-5
Romina Oprandi def. Heather Watson 6-4, 1-6, 6-3
Ayumi Morita def. Tamarine Tanasugarn 7-5, 6-1
Roberta Vinci def. Sybille Bammer 6-3, 6-3
Klara Zakopalova def. Yvonne Meusburger 6-7 (1-7), 6-1, 6-0
Arantxa Parra Santonja def. Olga Govortsova 6-3, 2-6, 6-4
Monica Niculescu def. Gisela Dulko 6-3, 6-2
Bojana Jovanovski def. Casey Dellacqua 6-1, 6-0