Stadium: Court 1 Round: 27
| ITF Portugal F19 | 2018/10/04 09:00 | Merckx, Jonas v Pedro Vives Marcos | 4-6,6-3,6-2 |
| ITF Portugal F19 | 2018/10/02 11:10 | Merckx, Jonas v Leote Prata, Martim | 6-3,6-3 |
| ITF Portugal F18 | 2018/09/27 09:00 | Merckx, Jonas v Desein, Niels | 4-6,6-7 |
| ITF Portugal F18 | 2018/09/25 09:00 | Tchoutakian, Maxime v Merckx, Jonas | 2-6,4-6 |
| ITF Belgium F10 | 2018/08/30 09:00 | Merckx, Jonas v Colin Sinclair | 2-6,6-4,1-6 |
| ITF Belgium F10 | 2018/08/29 07:30 | Merckx, Jonas v Carr, Simon | 7-6,4-6,6-2 |
| ITF Belgium F10 | 2018/08/28 08:00 | Merckx, Jonas v Buvaysar Gadamauri | 6-1,6-3 |
| ITF Belgium F9 | 2018/08/23 11:00 | Juan Bautista Otegui v Merckx, Jonas | 6-2,6-4 |
| ITF Portugal F19 | 2018/10/04 12:55 | Sao Thiago, Igor v Gil, Fred | 1-6,0-6 |
| ITF Portugal F19 | 2018/10/03 11:55 | Almeida, Tomas v Gil, Fred | 0-6,3-6 |
| ITF Portugal F18 | 2018/09/28 09:30 | Gil, Fred v Glasspool, Lloyd | 5-7,4-6 |
| ITF Portugal F18 | 2018/09/27 10:15 | Gil, Fred v Matos, Diego | 6-4,6-0 |
| ITF Portugal F18 | 2018/09/26 11:05 | Gil, Fred v Sao Thiago, Igor | 6-7,6-1,6-1 |
| ITF Portugal F17 | 2018/09/23 10:00 | Monteiro, Joao v Gil, Fred | 6-3,4-6,5-7 |
| ITF Portugal F17 | 2018/09/22 10:00 | Cacao, Tiago v Gil, Fred | 6-2,3-6,6-7 |
| ITF Portugal F17 | 2018/09/21 09:00 | Dischinger, Eduardo v Gil, Fred | 3-6,1-6 |