2nd rd

Sofia Kenin (USA) bt Ashleigh Barty (AUS x1) 6-7 (5/7), 6-3, 6-4

Kiki Bertens (NED x5) bt Francesca Di Lorenzo (USA) 6-2, 6-1

1st rd

Victoria Azarenka (BLR) bt Camila Giorgi (ITA) 6-2, 6-2

Katerina Siniakova (CZE) bt Danielle Collins (USA) 4-6, 7-6 (7/3), 6-2

Alison Riske (USA) bt Maria Sakkari (GRE) 4-6, 6-2, 7-6 (9/7)

Carla Suárez (ESP) bt Venus Williams (USA) 6-4, 6-2

Bianca Andreescu (CAN) bt Eugenie Bouchard (CAN) 4-6, 6-1, 6-4

Donna Vekic (CRO) bt Madison Keys (USA x14) 3-6, 7-6 (7/5), 7-6 (7/5)

Ekaterina Alexandrova (RUS) bt Misaki Doi (JPN) 6-2, 6-2

Zhang Shuai (CHN) bt Anastasija Sevastova (LAT x10) 7-6 (7/5), 6-2

Iga Swiatek (POL) bt Ajla Tomljanovic (AUS) 4-1 abandon

Tatjana Maria (GER) bt Zheng Saisai (CHN) 6-3, 6-4