Stadium: Court 1 Round: 62
| ITF Portugal F18 | 2018/09/23 09:00 | Adan Freire Da Silva v Joao Graca | 3-6,2-6 |
| ITF Portugal F18 | 2018/09/22 09:00 | Joao Graca v Afonso Portugal | 4-6,7-6,6-2 |
| ITF Portugal F17 | 2018/09/17 09:00 | Joao Graca v Rafael I Luque | 2-6,4-6 |
| ITF Portugal F13 | 2018/07/29 08:30 | Davide Albertoni v Joao Graca | 6-4,6-1 |
| ITF Portugal F13 | 2018/07/28 08:30 | Joao Graca v Fernando Andre | 6-3,6-3 |
| ITF Portugal F6 Qual | 2018/03/24 13:00 | Joao Graca v Pedro Gabriel Rodrigues | 4-6,1-6 |
| ITF Portugal F5 Qual | 2018/03/18 11:30 | Joao Graca v Gabriele Moghini | 6-2,3-6,3-6 |
| ITF Portugal F4 | 2018/03/10 12:30 | Joao Graca v Alexandre G R Girotto | 6-2,5-7,4-6 |
| ITF Portugal F18 | 2018/09/23 13:00 | Illia Stoliar v Igor Sao Thiago | 6-4,3-6,3-6 |
| ITF Portugal F17 | 2018/09/17 14:45 | Maksim Tikhomirov v Igor Sao Thiago | 6-7,6-2,6-3 |
| ITF Brazil F4 Qual | 2018/05/14 14:50 | Enrique Bogo v Igor Sao Thiago | 6-1,2-6,6-3 |
| ITF Brazil F4 Qual | 2018/05/13 12:00 | Franco Roncadelli v Igor Sao Thiago | 5-7,3-6 |
| ITF Brazil F3 | 2018/05/07 12:30 | Felipe Garla v Igor Sao Thiago | 6-4,4-6,7-5 |
| ITF Brazil F3 | 2018/05/06 12:30 | Joao M Nusdeo v Igor Sao Thiago | 3-6,3-6 |
| ITF Brazil F2 | 2018/04/29 15:00 | Alex Blumenberg v Igor Sao Thiago | 6-4,5-7,6-4 |
| ITF Brazil F1 | 2018/04/22 15:30 | Gustavo De O Cruz v Igor Sao Thiago | 6-4,5-7,6-1 |