Stadium: Court 1 Round: 25 Ground: Clay
| 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 Jaroslav Pospisil | 6-3,0-6,1-6 |
| ITF Turkey F13 | 2018/04/02 07:00 | Oliveira, Cristian v Broville, Maxence | 7-5,6-7,6-4 |
| ITF Brazil F2 | 2018/05/05 16:00 | Ribeiro Marcondes, Igor v Matos, Rafael | 4-6,4-6 |
| ITF Brazil F2 | 2018/05/04 15:00 | Schmid, Aaron v Ribeiro Marcondes, Igor | 6-7,3-6 |
| ITF Brazil F2 | 2018/05/02 15:00 | Tsuchiya, Alexandre v Ribeiro Marcondes, Igor | 7-5,5-7,3-6 |
| ITF Brazil F2 | 2018/04/30 15:00 | Ribeiro Marcondes, Igor v Jose Pereira | 6-4,7-6 |
| ITF Brazil F1 | 2018/04/23 19:15 | Ribeiro Marcondes, Igor v Oscar Jose Gutierrez | 6-2,2-6,3-6 |
| ITF Egypt F13 | 2018/04/11 09:25 | Ribeiro Marcondes, Igor v Vernier, Michel | 3-6,6-7 |
| Egypt F12, Singles Qualifying | 2018/04/05 09:15 | Ribeiro Marcondes, Igor v Montsi, Siphosothando | 4-6,2-6 |
| Egypt F12, Singles Qualifying | 2018/04/04 08:00 | Krivic, Ivan v Ribeiro Marcondes, Igor | 3-6,1-6 |