| ITF Portugal F14 | 2018/08/04 10:00 | Illia Stoliar v Bernardo A P E Oliveira | 4-6,6-4,7-5 |
| ITF Portugal F13 | 2018/07/28 08:30 | Illia Stoliar v Egill Sigurdsson | 2-6,0-6 |
| ITF Portugal F11 Qual | 2018/06/30 08:30 | Illia Stoliar v Henrique Brancal | 6-4,3-6,6-7 |
| ITF Portugal F10 | 2018/06/24 12:00 | Alexander Donski v Illia Stoliar | 6-2,6-4 |
| ITF Portugal F10 | 2018/06/23 12:00 | Danail Banov v Illia Stoliar | 4-6,4-6 |
| ITF Portugal F6 Qual | 2018/03/25 09:00 | Sebastien Boltz v Illia Stoliar | 6-1,6-0 |
| ITF Portugal F2 Qual | 2018/02/25 13:00 | Diego A B Sanchez v Illia Stoliar | 6-2,6-2 |
| ITF Portugal F17 | 2017/08/19 08:30 | Illia Stoliar v Felipe Muzzi | 1-6,0-6 |
| ITF Portugal F13 | 2018/07/28 14:00 | Luke Jacob Gamble v Eduardo Morais | 6-2,6-0 |
| ITF Portugal F12 Qual | 2018/07/22 10:30 | Eduardo Morais v Antonio Cembellin Prieto | 1-6,3-6 |
| ITF Portugal F11 Qual | 2018/07/01 09:00 | Eduardo Morais v Guilherme Valdoleiros | 3-6,2-6 |