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No. 12 Carla Suarez Navarro def. Kristina Mladenovic; 6-2, 3-6, 7-5
Varvara Lepchenko def. Heather Watson; 1-6, 6-3, 6-3
No. 10 Roberta Vinci def. Elina Svitolina; 6-2, 6-2
No. 5 Sara Errani def. Kirsten Flipkens; 7-6 (3), 6-1
No. 11 Sloane Stephens def. Aleksandra Wozniak; 6-4, 6-4
Monica Niculescu def. Annika Beck; 7-6 (4), 6-4
Francesca Schiavone def. Alize Cornet; 3-2 (ret.)
Urszula Radwanska def. No. 16 Simona Halep; 7-6 (4), 7-6 (2)
No. 4 Na Li def. Daniela Hantuchova; 6-0, 6-4
Lauren Davis def. Mona Barthel; 6-0, 5-7, 6-4
No. 13 Sabine Lisicki def. Chanelle Scheepers; 6-3, 6-2
Laura Robson def. Klara Zakopalova; 7-6 (3), 4-6, 6-1
Misaki Doi def. Silvia Soler-Espinosa; 6-1, 6-1
Lucie Safarova def.  Samantha Stosur; 7-5, 6-3
Kaia Kanepi def. Julia Goerges; 7-5, 6-4
Madison Keys def. Dominika Cibulkova; 6-4, 6-3
No. 3 Agnieszka Radwanska def. Stefanie Voegele; 4-6, 6-4, 6-4
No. 1 Serena Williams def. Elena Vesnina; 6-4, 6-2
Maria Kirilenko def. Jie Zheng; 7-5, 6-2
Andrea Petkovic def. No. 2 Victoria Azarenka; 6-4, 2-6, 6-4
Bojana Jovanovski def. Sorana Cirstea; 6-3, 6-2
Galina Voskoboeva def. Sharon Fichman; 6-4, 6-3
Shuai Zhang def. Shuai Peng; 6-3, 6-3
Svetlana Kuznetsova def. Su-Wei Hsieh; 6-1, 6-1
Polona Hercog def. Monica Puig; 6-1, 6-4
Eugenie Bouchard def. Magdalena Rybarikova; 6-4, 6-1
While Monday was the first day of action for the men's side, it was the third day in the women's singles draw. Of course, most of the top players made it through in the early days unscathed.
Day 1 of the tournament was highlighted by Urszula Radwanska's upset over No. 16 Simona Halep in a match that featured two tiebreaks. On the second day, Lucie Safarova had the biggest upset when she defeated No. 15 Samantha Stosur.
However, the tournament took a major turn on Day 3 when the No. 2 player in the world lost in her first appearance.
Victoria Azarenka struggled mightily in a loss to Andrea Petkovic, totaling 15 double faults and 44 unforced errors. No matter who you are playing, it is hard to come away with a win after making that many mistakes.
This changes the outlook of the entire tournament, as Li Na becomes the favorite to advance to the finals in the bottom of the draw.
Ana Ivanovic was also impressive in Round 1, winning a tough opening match against Flavia Pennetta. She remains a sleeper to make a deep run in this loaded tournament.