Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF Portugal F5 Qual | 2018/03/20 10:00 | Johan Nikles v Jack Findel-Hawkins | 5-7,6-1,7-6 |
| ITF Portugal F5 Qual | 2018/03/19 13:35 | Johan Nikles v Jack Findel-Hawkins | 5-7,6-1,6-6 |
| ITF Portugal F5 Qual | 2018/03/19 10:00 | Johan Nikles v Pelle Boerma | 6-3,6-4 |
| ITF Portugal F4 | 2018/03/15 10:00 | Johan Nikles v Maximilian Neuchrist | 6-7,3-6 |
| ITF Portugal F4 | 2018/03/14 10:00 | Francisco Cabral v Johan Nikles | 6-0,2-6,1-6 |
| ITF Portugal F3 | 2018/03/10 11:00 | Pablo Vivero Gonzalez v Johan Nikles | 6-3,6-4 |
| ITF Portugal F3 | 2018/03/08 17:20 | Gibril Diarra v Johan Nikles | 2-6,1-6 |
| ITF Portugal F3 | 2018/03/08 12:00 | Johan Nikles v Luis G Monio | 2-6,6-0,6-2 |
| ITF Portugal F4 | 2018/03/12 13:00 | Lamine Ouahab v Tiago Cacao | 6-4,4-6,6-4 |
| ITF Portugal F3 | 2018/03/10 12:50 | Carlos E. Severino v Tiago Cacao | 3-6,6-2,6-1 |
| ITF Portugal F3 | 2018/03/08 13:30 | Tiago Cacao v Roberto Ortega-Olmedo | 6-2,1-6,6-4 |
| ITF Portugal F2 | 2018/02/27 18:30 | Pablo Vivero Gonzalez v Tiago Cacao | 6-3,6-0 |
| ITF Portugal F1 | 2018/02/25 11:00 | Tiago Cacao v Frederico Ferreira Silva | 2-6,7-6,5-7 |
| ITF Portugal F1 | 2018/02/24 13:05 | Yannick Mertens v Tiago Cacao | 3-6,6-4,4-6 |
| ITF Portugal F1 | 2018/02/23 11:35 | Tiago Cacao v Ben Patael | 1-6,6-1,6-3 |
| ITF Portugal F1 | 2018/02/21 12:40 | Tiago Cacao v Bruno Mardones | 6-4,6-1 |