Ekaterina Makarova, Russia, def. Magdalena Rybarikova, Slovakia, 2-6, 6-3, 6-3.

Aryna Sabalenka, Belarus, def. Daria Gavrilova (9), Australia, 3-6, 7-6 (6), 7-5.

Monica Puig, Puerto Rico, def. Anett Kontaveit, Estonia, 6-4, 6-3.

Petra Kvitova (3), Czech Republic, def. Zarina Diyas, Kazakstan, 6-1, 5-7, 6-2.

Doubles
First Round

Kiki Bertens, Netherlands, and Johanna Larsson, Sweden, def. Monique Adamczak, Australia, and Oksana Kalashnikova, Georgia, 6-3, 6-4.

Quarterfinals

Andrea Sestini Hlavackova and Barbora Strycova, Czech Republic, def. Darija Jurak, Croatia, and Raluca Olaru, Romania, 6-3, 6-3.

Karolina and Kristyna Pliskova, Czech Republic, def. Nadiia Kichenok, Ukraine, and Anastasia Rodionova, Australia, 6-4, 5-7, 10-5.