Stadium: Court 1 Round: 62 Ground: Hardcourt outdoor
| ITF Portugal F12 Qual | 2018/07/22 12:00 | Dowson, Dan v Torres, Tiago | 6-2,6-4 |
| ITF Spain F19 | 2018/07/17 17:55 | Pla Malfeito, Jaume v Dowson, Dan | 6-4,6-3 |
| ITF Spain F19 Qual | 2018/07/16 09:35 | Dowson, Dan v Imanol L Morillo | 6-4,3-6,7-6 |
| ITF Spain F19 Qual | 2018/07/15 08:30 | Dowson, Dan v Vicente O Moratalla | 7-6,6-1 |
| ITF Spain F19 Qual | 2018/07/14 12:00 | Dowson, Dan v Hans Albert Schubert | 6-1,6-2 |
| ITF Hungary F5 Qual | 2018/06/18 10:05 | Duje Ajdukovic v Dowson, Dan | 6-1,6-3 |
| ITF Hungary F5 Qual | 2018/06/17 10:30 | Bachmaier, Philip v Dowson, Dan | 4-6,4-6 |
| ITF Hungary F5 Qual | 2018/06/16 12:00 | Daskalovic, Aleksa v Dowson, Dan | 3-6,6-3,3-6 |
| ITF Portugal F9 | 2018/06/18 12:20 | Afonso Portugal v Cortes Alcaraz, Aaron | 2-6,2-6 |
| ITF Portugal F9 | 2018/06/17 09:00 | Gessner, Lucas v Afonso Portugal | 2-6,0-6 |
| ITF Portugal F9 | 2018/06/16 10:00 | Afonso Portugal v Silva, Guilherme | 6-2,6-0 |
| ITF Portugal F8 Qual | 2018/04/14 10:30 | Almeida, Manuel v Afonso Portugal | 6-2,4-6,7-6 |
| ITF Portugal F7 Qual | 2018/04/08 18:00 | Afonso Portugal v Daniel Batista | 4-6,2-6 |
| ITF Portugal F7 Qual | 2018/04/07 15:30 | Guerra, Joao v Afonso Portugal | 3-6,6-2,4-6 |
| Portugal F4, Singles Qualifying | 2018/03/10 11:00 | Afonso Portugal v Laelson Rodrigues | 6-7,6-1,4-6 |
| ITF Portugal F3 | 2018/03/03 14:00 | Montalvo Hidalgo, Manuel v Afonso Portugal | 6-2,6-4 |