Donald Young, United States, def. Yen-hsun Lu, Taiwan, 5-1, retired.
Jan-Lennard Struff, Germany, def. Benjamin Becker, Germany, 3-6, 7-6 (10), 6-4.
Carlos Berlocq, Argentina, def. Thanasi Kokkinakis, Australia, 6-4, 3-6, 6-2.
Jack Sock, United States, def. Go Soeda, Japan, 6-3, 6-4.
Chung Hyeon, South Korea, def. Marcel Granollers, Spain, 6-0, 4-6, 6-4.
Nicolas Almagro, Spain, def. Sergiy Stakhovsky, Ukraine, 6-3, 6-7 (3), 6-4.
Robin Haase, Netherlands, def. Kyle Edmund, Britain, 6-2, 6-2.
Jarkko Nieminen, Finland, def. Marinko Matosevic, Australia, 6-3, 6-3.
Filip Krajinovic, Serbia, def. Dusan Lajovic, Serbia, 2-6, 7-6 (5), 4-2, retired.
James Duckworth, Australia, def. Damir Dzumhur, Bosnia-Herzegovina, 6-3, 3-6, 6-3.
Albert Ramos-Vinolas, Spain, def. Joao Sousa, Portugal, 6-2, 6-2.
Dominic Thiem, Austria, def. Diego Schwartzman, Argentina, 7-6 (0), 7-5.
Belinda Bencic, Switzerland, def. Daniela Hantuchova, Slovakia, 6-1, 7-6 (5).
Christina McHale, United States, def. Sorana Cirstea, Romania, 7-5, 6-4.
Annika Beck, Germany, def. Zhang Shuai, China, 6-4, 4-6, 6-4.
Alison Riske, United States, def. Mirjana Lucic-Baroni, Croatia, 6-4, 6-0.
Tsvetana Pironkova, Bulgaria, def. Kateryna Kozlova, Ukraine, 6-4, 6-3.
Daria Gavrilova, Russia, def. Marina Erakovic, New Zealand, 5-1, retired.
Elena Vesnina, Russia, def. Alexandra Dulgheru, Romania, 6-4, 6-2.
Heather Watson, Britain, def. Evgeiniya Rodina, Russia, 3-6, 6-1, 7-5.
Urszula Radwanska, Poland, def. CoCo Vandeweghe, United States, 6-4, 6-7 (2), 6-3.
Stefanie Voegele, Switzerland, def. Kirsten Flipkens, Belgium, 6-2, 6-2.
Pauline Parmentier, France, def. Kiki Bertens, Netherlands, 4-6, 6-2, 6-3.
Tatjana Maria, Germany, def. Roberta Vinci, Italy, 7-6 (9), 6-3.
Nicole Vaidisova, Czech Republic, def. Timea Babos, Hungary, 6-1, 7-6 (4).
Victoria Azarenka, Belarus, def. Silvia Soler-Espinosa, Spain, 6-1, 6-3.
Julia Goerges, Germany, def. Jana Cepelova, Slovakia, 6-1, 6-0.
Alison Van Uytvanck, Belgium, def. Magdalena Rybarikova, Slovakia, 7-5, 2-6, 6-0.
Irina Falconi, United States, def. Monica Puig, Puerto Rico, 7-6 (9), 7-6 (3).
Anastasia Pavlyuchenkova, Russia, def. Vera Zvonareva, Russia, 6-2, 3-6, 7-5.
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