Stadium: Court 3 Round: 44 Ground: Clay
| 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 |
| ITF Netherlands F2 | 2018/07/03 13:15 | van Der Horst, Tim v Zhurbin, Alexander | 1-6,3-6 |
| ITF Netherlands F1 Qual | 2018/06/25 09:00 | Barretto, Paul v van Der Horst, Tim | 6-1,6-1 |
| ITF Netherlands F1 Qual | 2018/06/24 09:00 | van Der Horst, Tim v Lazar Vojinovic | 7-5,2-6,6-2 |
| ITF Hungary F3 Qual | 2018/05/21 08:00 | Cmager, Nick v van Der Horst, Tim | 6-4,6-0 |
| ITF Hungary F3 Qual | 2018/05/20 08:00 | Boerma, Pelle v van Der Horst, Tim | 1-6,3-6 |
| ITF Hungary F2 Qual | 2018/05/13 08:00 | Turcu, Mihnea Lorin Stefan v van Der Horst, Tim | 7-6,6-3 |
| ITF Belgium F5 | 2018/07/26 11:00 | Zizou Bergs v Giusca, Teodor | 6-0,6-3 |
| ITF Belgium F5 | 2018/07/25 08:00 | Giusca, Teodor v Sonkin, Jeremy | 6-1,6-3 |
| ITF Belgium F5 | 2018/07/23 08:00 | Simon Beaupain v Giusca, Teodor | 2-6,1-6 |
| ITF Belgium F5 | 2018/07/22 12:00 | Giusca, Teodor v Diederich, Tom | 6-4,6-2 |
| ITF Belgium F5 | 2018/07/21 13:30 | Giusca, Teodor v Nickels, Christophe | 6-0,7-6 |
| ITF Belgium F4 | 2018/07/15 11:30 | Simon Beaupain v Giusca, Teodor | 3-6,6-2,7-5 |
| ITF Belgium F3 | 2018/07/03 08:00 | Giusca, Teodor v Madaras, Dragos Nicolae | 4-6,1-6 |
| ITF Belgium F3 Qual | 2018/07/02 08:00 | Damiens, Antoine v Giusca, Teodor | 1-6,6-7 |