| Cristian - Mar.Trevisan 2:6 2:6 | 3 s |
| Gabashvili - Marchenko 6:4 5:7 7:5 | 6 s |
| Mladenovic - L.Samsonova 1:6 4:6 | 4 s |
| G.Dimitrov - Coric 6:3 5:7 10:8 | 3 s |
| Sakkari - Sabalenka 2:6 6:4 1:6 | 3 s |
| C.Ilkel - A.Arnaboldi 6:3 4:6 5:7 | 3 s |
| Sonego - P.Cuevas 4:6 4:6 | 3 s |
| Babos - Putintseva 3:6 4:6 | 3 s |
| Hibino - Sakkari 6:7(4) 4:6 | 3 s |
| Bencic - D.Collins 3:6 1:6 | 5 s |
| Aiava - Potapova 3:6 4:6 | 3 s |
| S.Zhang - Doi 6:4 6:3 | 3 s |
| A.S.sanchez - Ca.Dolehide 3:6 6:4 5:7 | 2 s |
| K.King - G.Oliveira 6:1 6:2 | 3 s |
| Luc.Gomez - D.E.galan 7:5 1:6 2:6 | 3 s |
| De.Novak - Moriya 7:6(5) 6:2 | 2 s |
| Cornet - Bonaventure 4:6 7:5 6:3 | 2 s |
| Nishioka - N.Djokovič 3:6 2:6 2:6 | 2 s |
| Putintseva - Diatchenko 6:1 6:4 | 3 s |
| Begu - T.Townsend 6:0 6:2 | 3 s |
| Shinikova - A.Gasanova 6:4 7:5 | 4 s |