Dayana Yastremska, Ukraine, def. Kristina Kucova, Slovakia, 7-6 (6), 6-2.

Zhang Shuai, China, def. Daria Gavrilova (7), Australia, 6-1, 6-3.

Garbine Muguruza (4), Spain, def. Luksika Kumkhum, Thailand, 6-2, 7-5.

Wang Qiang (6), China, leads Elina Svitolina (1), Ukraine, 6-2, 5-2 (15-30), susp., rain

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Shuko Aoyama, Japan, and Lidziya Marozava (4), Belarus, def. Nadiia Kichenok, Ukraine, and Anastasia Rodionova, Australia, 4-6, 6-3, 10-7.