| Kamke - Cressy 4:6 3:6 | 3 s |
| Zidansek - Kalinskaya 6:3 6:4 | 2 s |
| Ivashka - Ocleppo 6:7(4) 7:6(3) 4:6 | 3 s |
| Benoit - Tomova 3:6 3:6 | 2 s |
| Zvonareva - Stosur 4:6 6:2 6:2 | 2 s |
| Muguruza - Tomljanovic 6:1 6:2 | 2 s |
| Troicki - Blanch 6:7(3) 6:4 3:6 | 1 s |
| Kravchuk - Yevseyev 4:6 4:6 | 2 s |
| K.Montsi - Karlovskiy 2:6 7:5 2:6 | 2 s |
| Martineau - Kolář 6:2 4:6 4:6 | 3 s |
| Soeda - So.W.kwon 2:6 7:6(2) 3:6 | 2 s |
| Seyboth Wild - C.Ruud 7:5 4:6 6:3 | 2 s |
| Sakkari - Sabalenka 2:6 6:4 1:6 | 2 s |
| Kalenichenko - Rawat 7:5 3:6 2:6 | 1 s |
| Rybakina - Kar.Plíšková 7:6(1) 6:3 | 2 s |
| S.Zhang - Doi 6:4 6:3 | 4 s |
| Musetti - Halys 7:6(8) 4:6 3:6 | 3 s |
| Hurkacz - Hoang 6:4 6:1 | 2 s |
| Peniston - E.King 3:6 4:6 | 3 s |
| R.Quiroz - A.Harris 7:6(5) 4:6 6:1 | 3 s |
| Peliwo - Yamasaki 6:1 7:5 | 2 s |
| S.Kenin - Diatchenko 6:4 6:3 | 2 s |
| Dzumhur - Bolt 6:7(5) 6:3 6:4 | 3 s |
| Ficovich - Haerteis 2:6 6:7(5) | 2 s |
| Diez - J.Jung 2:6 2:6 | 3 s |
| Gabueva - Van Uytvanck 1:6 4:6 | 1 s |
| Swiatek - Vekic 6:4 7:5 | 2 s |
| Svitolina - Govortsova 6:3 6:4 | 1 s |
| K.King - G.Oliveira 6:1 6:2 | 3 s |
| Qureshi - Razborsek 4:6 7:5 7:6(1) | 1 s |
| Lopez Villasenor - O.Virtanen 6:3 6:7(5) 7:5 | 3 s |
| Horansky - Lama 7:6(3) 7:5 | 2 s |
| B.Haas - Falconi 6:4 1:6 6:3 | 2 s |
| Kostyuk - Di Giuseppe 6:1 4:6 6:1 | 1 s |
| Karlovič - J.Thompson 3:6 6:7(2) | 2 s |
| Fabbiano - Myneni 6:4 5:7 6:2 | 4 s |
| Kavcic - Gojo 3:6 6:4 6:7(4) | 2 s |
| J.Munar - Caruso 7:5 6:4 | 3 s |
| Wawrinka - G.Dimitrov 4:6 4:6 | 1 s |
| S.Johnson - T.Daniel 7:6(3) 6:2 | 2 s |
| Ferreira Silva - Crepatte 3:6 4:6 | 2 s |
| V.Kudermetova - Mattek 6:4 6:2 | 2 s |
| J.Thompson - Seppi 7:6(2) 4:6 1:6 | 2 s |
| K.King - A.Vukic 0:6 3:6 | 2 s |
| Kirchheimer - Peliwo 6:3 6:4 | 3 s |
| S.Kuznetsova - Sabalenka 4:6 3:6 | 1 s |
| Cecchinato - H.Dellien 3:6 6:1 3:6 | 1 s |
| Teichmann - Čepelová 7:5 6:2 | 2 s |
| Andujar - Blanch 6:3 6:7(4) 5:7 | 1 s |
| P.Boscardin Dias - Kovalík 3:6 1:6 | 2 s |
| S.Rogers - Pegula 6:7(4) 2:6 | 2 s |
| Fritz - Fayziev 6:1 6:2 | 2 s |
| Kovalík - Caruso 2:6 3:6 | 3 s |