Angelique Kerber (1), Germany, def. Patricia Mayr-Achleitner, Austria, 6-3, 6-1.

Stefanie Voegele, Switzerland, def. Sloane Stephens (2), United States, 6-7 (3), 6-4, 7-5.

Ana Ivanovic (3), Serbia, def. Dominika Cibulkova (7), Slovakia, 6-2, 6-4.

Carla Suarez Navarro (4), Spain, def. Kirsten Flipkens (5), Belgium, 6-1, 6-3.

Irina Buryachok, Ukraine, and Katarzyna Piter, Poland, def. Julia Goerges and Andrea Petkovic (2), Germany, 7-6 (1), 7-5.

Gabriela Dabrowski, Canada, and Alicja Rosolska (1), Poland, def. Janette Husarova, Slovakia, and Renata Voracova (3), Czech Republic, 6-4, 2-6, 16-14.