Stadium: Quadra 1 Round: 25 Ground: Clay
| Buenos Aires, Singles Qualifying M-ITF-ARG-22A | 2019/09/15 12:00 | Berne, Mateo v Oliveira, Cristian | 6-4,6-1 |
| ITF M15 Lambare | 2019/08/21 15:30 | Gonzalo Villanueva v Oliveira, Cristian | 6-1,7-6 |
| ITF M15 Lambare | 2019/08/20 14:00 | Oliveira, Cristian v Britez, Bruno | 6-4,7-6 |
| ITF M15 Lambare | 2019/08/19 14:00 | Oliveira, Cristian v Rivas Maturana, Vicente Manuel | 6-2,7-5 |
| Curitiba, Singles M-ITF-BRA-04A | 2019/06/27 19:40 | Oliveira, Cristian v Juan Pablo Ficovich | 1-6,2-6 |
| Curitiba, Singles M-ITF-BRA-04A | 2019/06/25 19:55 | Oliveira, Cristian v Schmid, Aaron | 6-2,6-3 |
| Sao Jose Do Rio Preto, Singles M-ITF-BRA-03A | 2019/06/21 15:40 | Juan Pablo Ficovich v Oliveira, Cristian | 6-1,6-1 |
| Sao Jose Do Rio Preto, Singles M-ITF-BRA-03A | 2019/06/20 16:55 | Oliveira, Cristian v Estevez Maximiliano | 6-3,7-5 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/05 00:30 | Panta Herreros, Jorge Brian v Echazu, Mauricio | 6-1,6-2 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/03 18:00 | Butsch, Justin v Echazu, Mauricio | 6-7,4-6 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/02 15:00 | Licea, Alejandro v Echazu, Mauricio | 1-6,2-6 |
| Santa Tecla, Singles M-ITF-ESA-01A | 2019/10/01 15:00 | Shamma, Nicholas v Echazu, Mauricio | 0-6,0-6 |
| ITF M15 Cancun | 2019/09/29 14:00 | Panta Herreros, Jorge Brian v Echazu, Mauricio | 2-6,6-2,6-3 |
| ITF M15 Cancun | 2019/09/27 14:00 | Mantilla, Felipe v Echazu, Mauricio | 5-7,0-6 |
| ITF M15 Cancun | 2019/09/26 14:30 | Bradley, Julian v Echazu, Mauricio | 2-6,4-6 |
| ITF M15 Cancun | 2019/09/25 15:00 | Emmett Ward v Echazu, Mauricio | 2-6,2-6 |