Stadium: Centre Court Round: 25 Ground: Clay
| ITF M15 Recife | 2021/09/21 13:00 | Lorenzo Esquici v Iago Almeida | 6-2,6-3 |
| ITF M25 Rio do Sul | 2021/10/19 13:55 | Franco Roncadelli v Christian Oliveira | 6-1,6-1 |
| ITF M15 Recife | 2021/09/22 13:00 | Christian Oliveira v Oscar Jose Gutierrez | 3-6,0-6 |
| ITF M15 Sao Paulo | 2019/10/16 14:00 | Conner Huertas Del Pino v Christian Oliveira | 6-3,6-3 |
| ITF M15 Sao Paulo | 2019/10/15 16:45 | Christian Oliveira v Gaston Erhardt | 7-6,6-3 |
| 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 |