Leylah Fernandez, Canada, def. Elise Mertens (7), Belgium, 2-6, 6-3, 7-5.

Sorana Cirstea (8), Romania, def. Han Shi, China, 6-3, 6-2.

Aliaksandra Sasnovich, Belarus, def. Daria Kasatkina, Russia, 6-4, 6-2.

Marie Bouzkova, Czechia, def. Kamilla Rakhimova, Russia, 6-4, 6-4.

Alexandra Eala, Philippines, def. Diane Parry, France, 6-3, 6-1.

Demi Schuurs, Netherlands, and Ellen Perez, Australia, def. Yihan Qu and Yushan Shao, China, 6-1, 6-1.

Maia Lumsden, Britain, and Maria Kozyreva, Russia, def. Olivia Nicholls, Britain, and Tereza Mihalikova, Slovakia, 6-4, 7-5.

Kristina Mladenovic, France, and Hanyu Guo (3), China, def. Shuko Aoyama, Japan, and En-Shuo Liang, Taiwan, 6-1, 6-1.