| Edmund - Basilashvili 7:6(0) 3:6 4:6 6:0 7:5 | 3 s |
| Del Potro - Raonic 5:7 7:6(1) 7:6(3) | 2 s |
| A.Ramos - Delbonis 2:6 4:6 | 2 s |
| Vekic - Lapko 6:2 7:6(6) | 2 s |
| Hemery - J.Munar 6:4 6:0 | 3 s |
| Vasilenko - Pellegrino 3:6 2:6 | 1 s |
| Hesse - C.Liu 0:6 0:2 ret. | 2 s |
| Klahn - Kecmanovic 7:6(7) 6:1 | 1 s |
| Ma.Cilič - Gi.Muller 4:6 6:3 6:3 | 2 s |
| Šafářová - Gavrilova 4:6 6:4 7:5 | 4 s |
| Vilella Martinez - Ortega Olmedo 6:7(6) 4:6 | 3 s |
| J.Thompson - Majchrzak 7:6(7) 6:2 | 2 s |
| Koepfer - Napolitano 6:4 6:3 | 3 s |
| Vesnina - Arruabarrena 6:2 6:2 | 3 s |
| Gasparyan - Stollar 3:6 6:2 6:1 | 2 s |
| P.Cuevas - L.Gomez 1:6 7:6(5) 6:3 | 1 s |
| Cornet - Lucic 6:1 7:5 | 2 s |
| Muchová - Hončová 1:6 7:5 6:2 | 2 s |
| E.Silva - K.Bondarenko 3:6 2:6 | 2 s |
| Mi.Kato - Gavrilova 1:6 6:7(4) | 1 s |
| Gunneswaran - Caruso 1:6 4:6 | 2 s |
| M.Purcell - Hurkacz 1:6 4:6 | 3 s |
| Fabbiano - Dzumhur 3:6 6:0 2:6 | 2 s |
| Kasatkina - Begu 6:2 6:3 | 2 s |
| F.Mena - Vilella Martinez 6:2 7:5 | 2 s |