Stadium: Centre Court Round: 26 Ground: Clay
| ITF Brazil F3 | 2018/05/08 17:10 | Oliveira, Cristian v Ribeiro Marcondes, Igor | 6-2,6-2 |
| ITF Brazil F3 | 2018/05/07 12:30 | Da Silva, Gabriel Ciro v Oliveira, Cristian | 6-7,4-6 |
| ITF Brazil F3 | 2018/05/06 12:30 | Zaidman, Nicolas v Oliveira, Cristian | 3-6,6-7 |
| ITF Brazil F2 | 2018/04/28 17:30 | Ferrari Maciel, Pedro v Oliveira, Cristian | 6-4,6-2 |
| ITF Brazil F1 | 2018/04/23 14:00 | Oliveira, Cristian v Gonzalo Villanueva | 7-5,3-6,0-6 |
| Turkey F14, Singles Qualifying | 2018/04/08 07:30 | Milan Drinic v Oliveira, Cristian | 4-6,7-5,6-1 |
| Turkey F14, Singles Qualifying | 2018/04/07 09:30 | Oliveira, Cristian v Kerdlaphee, Phongsapak | 6-0,6-1 |
| ITF Turkey F13 | 2018/04/04 09:00 | Oliveira, Cristian v Pospisil, Jaroslav | 6-3,0-6,1-6 |
| ITF Brazil F3 | 2018/05/07 18:25 | Turini, Thales v Daniel Dutra Da Silva | 6-4,3-6,4-6 |
| Puerto Vallarta, Mexico | 2018/05/01 23:00 | Daniel Dutra Da Silva v Estrella Burgos, Victor | 1-6,1-6 |
| ITF Brazil F1 | 2018/04/28 14:00 | Daniel Dutra Da Silva v Thiago Seyboth Wild | 5-7,6-7 |
| ITF Brazil F1 | 2018/04/27 15:30 | Daniel Dutra Da Silva v Joao Lucas Reis da Silva | 6-4,6-2 |
| ITF Brazil F1 | 2018/04/25 15:30 | Daniel Dutra Da Silva v Gonzalo Villanueva | 7-5,7-6 |
| ITF Brazil F1 | 2018/04/24 16:20 | Daniel Dutra Da Silva v Castro, Victor | 6-0,6-2 |
| Sao Paulo, Brazil, Qualifying | 2018/02/24 19:25 | Daniel Dutra Da Silva v Quiroz, Roberto | 6-4,2-6,3-6 |
| ATP Quito Qual | 2018/02/03 19:25 | Daniel Dutra Da Silva v Federico Gaio | 4-6,7-6,3-6 |