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