| Nadal - Khachanov 6:3 6:3 | 2 s |
| Tsurenko - Krejsová 6:2 6:3 | 2 s |
| A.Murray - Kližan 6:7(3) 6:2 6:2 7:6(3) | 2 s |
| Larsson - Tomova 7:5 6:4 | 2 s |
| Bury - Dalla Valle 6:4 6:4 | 1 s |
| Perrin - Arruabarrena 6:4 3:6 2:6 | 1 s |
| Kovalík - Mcdonald 2:6 2:6 | 5 s |
| K.Ch.chang - Broady 3:6 4:6 | 3 s |
| S.Ofner - Cecchinato 6:4 6:7(3) 2:6 | 6 s |
| Sorgi - V.Estrella 5:7 3:6 | 4 s |
| Eraydin - Ruse 0:6 3:6 | 6 s |
| Sonego - Pellegrino 7:6(4) 6:2 | 2 s |
| Bolt - T.Daniel 6:7(2) 2:6 | 3 s |
| Petkovič - Davis 3:6 2:6 | 3 s |
| Paquet - Saez Larra 6:2 6:4 | 4 s |
| Zapata Miralles - A.Pavic 6:1 6:4 | 4 s |
| Routliffe - Loeb 6:4 1:6 3:6 | 2 s |
| Ivakhnenko - Tomljanovic 5:7 3:6 | 2 s |
| Millman - Bautista 2:6 2:6 6:0 1:6 | 3 s |
| S.Golubovskaya - Potapova 1:6 3:6 | 1 s |
| D.Novikov - Mcdonald 6:3 6:7(2) 6:3 | 3 s |
| C.Witthoeft - Larsson 6:1 6:0 | 3 s |
| Kavcic - Vilella Martinez 6:4 3:6 6:3 | 3 s |
| Berdych - F.Lopez 6:7(5) 7:6(1) 5:7 | 1 s |
| Čepelová - H.Watson 6:1 6:7(0) 6:7(6) | 3 s |
| Fabbiano - R.Harrison 3:6 5:7 | 2 s |
| Sabalenka - Rosatello 7:5 4:6 3:6 | 3 s |