Siegemund L / Stollar F — Melichar N / Samsonova L

Kenin S / Krawczyk D — Danilina A / Krunic A

Mladenovic K / Zhang Shuai — Aoyama S / Bucsa C

Sakkari M / Vekic D — Eikeri U / Xu Y

Linette M / Tauson C — Babos T / Stefani L

Muhammad A / Schuurs D — Kichenok L / Perez E

Fernandez Leylah / Routliffe E — Khromacheva I / Sutjiadi A

Chan Hao-Ching / Jiang Xinyu — Hozumi E / Wu Fang-Hsien

Hunter S / Siniakova K — Krueger A / Pegula J

Guo Hanyu / Panova A — Danilovic O / Kostyuk M

Mihalikova T / Nicholls O — Joint M / Mboko V