Stadium: Court 1 Round: 26
| ITF Portugal F19 | 2018/10/04 13:05 | Monteiro, Joao v van Der Horst, Tim | 6-4,6-2 |
| ITF Portugal F20 | 2018/10/10 10:30 | Monteiro, Joao v Davies, George | 6-2,6-4 |
| ITF Portugal F19 | 2018/10/07 09:30 | Monteiro, Joao v Gil, Fred | 2-6,5-7 |
| ITF Portugal F19 | 2018/10/06 11:00 | Monteiro, Joao v Baltensperger, Raphael | 6-4,6-4 |
| ITF Portugal F19 | 2018/10/05 11:00 | Monteiro, Joao v Blanco Guadalupe, Jorge | 6-2,1-6,6-1 |
| ITF Portugal F19 | 2018/10/04 13:05 | Monteiro, Joao v van Der Horst, Tim | 6-4,6-2 |
| 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 F20 | 2018/10/10 11:00 | van Der Horst, Tim v Rodrigues, Pedro Gabriel | 6-3,7-6 |
| ITF Portugal F20 | 2018/10/08 09:00 | Almeida, Tomas v van Der Horst, Tim | 1-6,2-6 |
| ITF Portugal F20 | 2018/10/07 08:00 | van Der Horst, Tim v Rodeia, Andre | 6-2,6-1 |
| ITF Portugal F20 | 2018/10/06 11:00 | van Der Horst, Tim v Revkov, Roman | 6-3,6-1 |
| ITF Portugal F19 | 2018/10/04 13:05 | Monteiro, Joao v van Der Horst, Tim | 6-4,6-2 |
| 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 |