Stadium: Court 2 Round: 26 Ground: Clay
| ITF Brazil F2 | 2018/05/01 15:00 | Wilson Leite v Severino, Carlos Eduardo | 2-6,7-6,6-7 |
| ITF Brazil F1 | 2018/04/26 15:30 | Matos, Rafael v Severino, Carlos Eduardo | 7-5,6-2 |
| ITF Brazil F1 | 2018/04/24 16:05 | Turini, Thales v Severino, Carlos Eduardo | 6-4,2-6,4-6 |
| ITF Portugal F6 | 2018/03/27 09:00 | Barbosa, Romain v Severino, Carlos Eduardo | 6-2,6-2 |
| ITF Portugal F6 Qual | 2018/03/25 09:00 | Severino, Carlos Eduardo v Tomas C Abasolo | 6-2,6-0 |
| ITF Portugal F5 Qual | 2018/03/22 10:00 | Severino, Carlos Eduardo v Stanek, Robin | 4-6,6-3,3-6 |
| ITF Portugal F5 Qual | 2018/03/21 10:00 | Severino, Carlos Eduardo v Mardones, Bruno | 6-2,6-2 |
| ITF Portugal F5 Qual | 2018/03/19 11:00 | Severino, Carlos Eduardo v Almeida, Tomas | 6-2,0-6,6-2 |
| ITF Brazil F1 | 2018/04/26 01:30 | Santos, Nicolas v Lindell, Christian | 6-7,4-6 |
| ITF Brazil F1 | 2018/04/25 23:00 | Santos, Nicolas v Lindell, Christian | 6-7,4-5 |
| ITF Brazil F1 | 2018/04/23 23:35 | Santos, Nicolas v Mateus Alves | 6-3,6-4 |
| ITF Turkey F9 | 2018/03/05 07:00 | Santos, Nicolas v Gabi Adrian Boitan | 3-6,3-6 |
| ITF Turkey F9 | 2018/03/04 07:00 | Santos, Nicolas v Giusca, Teodor | 1-6,6-4,7-5 |
| Turkey F8, Singles Qualifying | 2018/02/27 11:35 | Emil Ruusuvuori v Santos, Nicolas | 6-4,6-4 |
| ITF Turkey F7 | 2018/02/21 10:00 | Santos, Nicolas v Sorgi, Joao Pedro | 3-6,0-6 |
| ITF Brazil F4 | 2017/12/01 13:00 | Daniel Dutra Da Silva v Santos, Nicolas | 6-3,6-0 |