| UTR Pro Tennis Series Rio de Janeiro | 2022/08/12 15:12 | Victor Milare Alves v Federico Gonzalez | 0-6,3-6 |
| UTR Pro Tennis Series Rio de Janeiro | 2022/08/12 14:15 | Stefani Figlia, B. v Oliveira, Cristian | 3-6,1-6 |
| UTR Pro Tennis Series Rio de Janeiro | 2022/08/10 15:00 | Athell Bennett v Oliveira, Cristian | 4-6,1-6 |
| UTR Pro Tennis Series Rio de Janeiro | 2022/08/05 16:36 | Oliveira, Cristian v Labuckas, Mateo | 1-6,2-6 |
| UTR Pro Tennis Series Rio de Janeiro | 2022/08/04 15:00 | Oliveira, Cristian v Hidalgo, Gabriel Alejandro | 4-6,2-6 |
| UTR Pro Tennis Series Rio de Janeiro | 2022/08/03 13:30 | Breno F Marques v Oliveira, Cristian | 1-6,4-6 |
| UTR Pro Tennis Series Rio de Janeiro | 2022/08/02 16:18 | Rafael Tosetto v Oliveira, Cristian | 6-4,5-2 |
| ITF M15 Cancun | 2022/07/19 14:00 | Oliveira, Cristian v Jean-Christian Morandais | 6-4,7-6 |
| ITF M15 Cancun | 2022/07/18 14:00 | Oliveira, Cristian v Rodrigo Reyna | 6-4,6-1 |