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Shelby Rogers' stunning run ended in the quarterfinals at the hands of No. 3 seed Garbine Muguruza. Despite having set point, the American lost in straight sets 7-5, 6-3. Samantha Stosur battled past another surprise quarterfinalist, Tsvetana Pironkova, 6-4, 7-6 (6). Pironkova, like Rogers, failed to capitalize on set points (in the second). Kiki Bertens kept her best major performance alive by knocking out Madison Keys, 7-6 (4), 6-3.