Stadium: Court 1 Round: 26
| ITF Portugal F19 | 2018/10/03 10:40 | Monteiro, Joao v Coelho, Fabio | 6-3,6-1 |
| ITF Portugal F18 | 2018/09/28 11:10 | Cacao, Tiago v Monteiro, Joao | 4-6,6-3,6-2 |
| ITF Portugal F18 | 2018/09/27 12:00 | Gonzalez, Wilfredo v Monteiro, Joao | 2-6,4-6 |
| ITF Portugal F18 | 2018/09/26 13:30 | Gray, Jonathan v Monteiro, Joao | 2-6,6-3,2-6 |
| 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 13:15 | Monteiro, Joao v Tchoutakian, Maxime | 6-4,6-2 |
| ITF Portugal F17 | 2018/09/21 09:00 | Monteiro, Joao v Rafael I Luque | 6-3,6-4 |
| ITF Portugal F17 | 2018/09/19 10:00 | Monteiro, Joao v Faria, Luis | 6-3,5-7,6-3 |
| ITF Portugal F19 | 2018/10/03 09:00 | van Der Horst, Tim v Ferreira, Goncalo | 6-4,6-4 |
| ITF Netherlands F5 | 2018/08/18 08:00 | Konings, Ruben v van Der Horst, Tim | 6-2,6-2 |
| ITF Netherlands F4 | 2018/08/11 09:00 | Borg, Maikel v van Der Horst, Tim | 3-6,6-1,6-1 |
| ITF Belgium F7 Qual | 2018/08/05 08:00 | Peters, Flemming v van Der Horst, Tim | 6-2,6-4 |
| ITF Belgium F7 Qual | 2018/08/04 07:30 | Hugounenq, Arthur v van Der Horst, Tim | 4-6,3-6 |
| ITF Belgium F6 Qual | 2018/07/28 09:30 | van Der Horst, Tim v Giusca, Teodor | 6-3,2-6,2-6 |
| ITF Belgium F4 | 2018/07/14 10:00 | Maxence Bertimon v van Der Horst, Tim | 6-3,6-2 |
| ITF Netherlands F3 | 2018/07/07 07:30 | van Der Horst, Tim v Naser, Javier | 1-6,1-6 |