| (9) | Alex Molcan SVK | √ | 6 | 6 | ||
| WC | Joao Fonseca BRA | 0 | 3 | |||
| Winner: A. MOLCAN | Time : 01:12:07 | |||||
| PR | Dominic Thiem AUT | 1 | 6 | 62 | ||
| Thiago Monteiro BRA | √ | 6 | 3 | 7 | ||
| Winner: T. MONTEIRO | Time : 02:44:12 | |||||
| (3) | Lorenzo Musetti ITA | 4 | 1 | |||
| Q | Nicolas Jarry CHI | √ | 6 | 6 | ||
| Winner: N. JARRY | Time : 01:13:28 | |||||
| Pedro Martinez ESP | √ | 7 | 6 | |||
| Cristian Garin CHI | 60 | 4 | ||||
| Winner: P. MARTINEZ | Time : 02:25:39 | |||||
| Laslo Djere SRB | √ | 6 | 3 | |||
| Q | Facundo Bagnis ARG | 2 | 2 | |||
| Winner: L. DJERE by retirement | Time : 01:05:27 | |||||
| Joao Sousa POR | 0 | 2 | ||||
| PR | Hugo Dellien BOL | √ | 6 | 6 | ||
| Winner: H. DELLIEN | Time : 01:05:44 | |||||
| Pedro Cachin ARG Francisco Cerundolo ARG |
2 | 4 | ||||
| Tomas Martin Etcheverry ARG Diego Schwartzman ARG |
√ | 6 | 6 | |||
| Winners: ETCHEVERRY / SCHWARTZMAN | Time : 01:14:12 | |||||
| Sebastian Baez ARG Albert Ramos-Vinolas ESP |
5 | 6 | 6 | |||
| Nathaniel Lammons USA Jackson Withrow USA |
√ | 7 | 4 | 10 | ||
| Winners: LAMMONS / WITHROW | Time : 01:29:36 | |||||