Stadium: Quadra 2 Round: 54 Ground: Clay
| ITF M25 Rio de Janeiro | 2019/10/11 15:35 | Christian Oliveira v Felipe Meligeni Rodrigues Alves | 2-6,4-6 |
| ITF M25 Rio de Janeiro | 2019/10/08 17:30 | Christian Oliveira v Mauricio Echazu | 6-1,4-6,6-3 |
| ITF M15 Buenos Aires | 2019/09/15 12:00 | Mateo Berne v Christian Oliveira | 6-4,6-1 |
| ITF M15 Lambare | 2019/08/21 15:30 | Gonzalo Villanueva v Christian Oliveira | 6-1,7-6 |
| ITF M15 Lambare | 2019/08/20 14:00 | Christian Oliveira v Bruno Britez | 6-4,7-6 |
| ITF M15 Lambare | 2019/08/19 14:00 | Christian Oliveira v Vicente M R Maturana | 6-2,7-5 |
| ITF M15 Curitiba | 2019/06/27 19:40 | Christian Oliveira v Juan Pablo Ficovich | 1-6,2-6 |
| ITF M15 Curitiba | 2019/06/25 19:55 | Christian Oliveira v Aaron Schmid | 6-2,6-3 |
| ITF M15 Sao Paulo | 2019/10/14 14:00 | Paulo A S Dos Santos v Gaston Erhardt | 5-7,6-2,6-10 |
| ITF M25 Rio de Janeiro | 2019/10/07 14:00 | Andre Miele v Gaston Erhardt | 6-2,6-2 |
| ITF M15 Santiago | 2019/10/02 11:00 | Felipe Derdoy v Gaston Erhardt | 6-3,6-2 |
| ITF M15 Santiago | 2019/09/30 14:00 | Hugo Moura v Gaston Erhardt | 2-6,0-6 |
| ITF M15 Buenos Aires | 2019/09/17 15:35 | Matias Franco Descotte v Gaston Erhardt | 6-0,7-5 |
| ITF M15 Lambare | 2019/08/22 18:20 | Andre Miele v Gaston Erhardt | 6-2,7-6 |
| ITF M15 Lambare | 2019/08/21 14:00 | Gaston Erhardt v Maximiliano Estevez | 7-5,4-6,6-4 |
| ITF M15 Santa Cruz | 2019/08/07 19:00 | Maximiliano Estevez v Gaston Erhardt | 6-2,6-1 |