Round: 44 Ground: Hardcourt outdoor
| ITF Portugal F4 | 2018/03/13 13:30 | Andres F Canovas v Joao Antonio | 6-2,6-3 |
| ITF Portugal F4 | 2018/03/12 11:00 | Yann Marti v Joao Antonio | 6-0,6-4 |
| ITF Portugal F4 | 2018/03/11 17:00 | Jonathan Binding v Joao Antonio | 2-6,2-6 |
| ITF Portugal F4 | 2018/03/10 15:30 | Joao Antonio v Daniel Rodrigues | 6-1,6-4 |
| ITF Portugal F3 | 2018/03/05 17:00 | Jose Fco. Vidal Azorin v Joao Antonio | 6-3,6-2 |
| ITF Portugal F2 Qual | 2018/02/25 10:00 | Quentin Gueydan v Joao Antonio | 6-2,6-3 |
| ITF Portugal F2 Qual | 2018/02/24 12:30 | Joao Antonio v Zakhar Trapeznikov | 6-2,6-2 |
| ITF Portugal F1 | 2018/02/21 14:45 | Joao Antonio v Igor Marcondes | 0-6,2-6 |
| ITF Portugal F5 Qual | 2018/03/18 12:30 | Yanik Kaelin v Daniel Rodrigues | 4-6,2-6 |
| ITF Portugal F5 Qual | 2018/03/18 11:30 | Joao Velloso v Yanik Kaelin | 0-6,1-6 |
| ITF Portugal F3 | 2018/03/07 10:00 | Dusty H. Boyer v Yanik Kaelin | 6-3,6-4 |
| ITF Portugal F3 | 2018/03/05 13:00 | Hans Albert Schubert v Yanik Kaelin | 2-6,4-6 |
| ITF Portugal F3 | 2018/03/05 10:00 | Laelson Rodrigues v Yanik Kaelin | 3-6,0-6 |
| ITF Portugal F2 Qual | 2018/02/25 15:00 | Yanik Kaelin v Ivan Marrero Curbelo | 3-6,2-6 |
| ITF Portugal F2 Qual | 2018/02/25 10:00 | Gianmarco Amatiste v Yanik Kaelin | 2-6,3-6 |
| ITF Portugal F1 | 2018/02/19 10:00 | Simon A Ivanov v Yanik Kaelin | 6-3,6-3 |