Stadium: Court 1 Round: 25 Ground: Clay
| ITF Belgium F3 | 2018/07/05 13:30 | Georgii Kravchenko v Jonas Merckx | 1-6,3-6 |
| ITF Belgium F3 | 2018/07/03 11:05 | George Tsivadze v Jonas Merckx | 7-5,3-6,3-6 |
| ITF Belgium F2 | 2018/06/26 10:15 | Germain Gigounon v Jonas Merckx | 6-3,6-1 |
| ITF Belgium F1 | 2018/06/22 11:00 | Yann Marti v Jonas Merckx | 5-7,7-6,6-0 |
| ITF Belgium F1 | 2018/06/21 15:05 | Alexis Gautier v Jonas Merckx | 4-6,3-6 |
| ITF Belgium F1 | 2018/06/19 09:55 | Louis Herman v Jonas Merckx | 3-6,0-6 |
| ITF Ukraine F3 | 2018/05/24 07:00 | Olexiy Kolisnyk v Jonas Merckx | 6-1,6-4 |
| ITF Ukraine F3 | 2018/05/23 09:25 | Dmitry Myagkov v Jonas Merckx | 1-6,3-6 |
| ITF Germany F6 | 2018/07/01 08:00 | Lucas Gerch v Jannik Rother | 6-7,4-6 |
| ITF Czech Republic F2 Qual | 2018/05/21 08:00 | Lucas Gerch v Dominique Graf | 6-3,6-0 |
| ITF Israel F3 | 2018/03/20 08:00 | Simon Beaupain v Lucas Gerch | 1-6,3-6 |
| ITF Israel F3 | 2018/03/19 08:00 | Lucas Gerch v Motvey Radionov | 6-3,6-0 |
| ITF Israel F2 | 2018/03/14 11:25 | Patrik Niklas-Salminen v Lucas Gerch | 6-1,6-4 |
| ITF Israel F2 | 2018/03/12 10:00 | Lucas Gerch v Motvey Radionov | 6-2,6-1 |
| ITF Israel F2 | 2018/03/11 10:00 | Lucas Gerch v Vladislav Ivanov | 7-6,6-0 |
| ITF Israel F2 | 2018/03/11 07:30 | Lucas Gerch v Ofek Amoyal | 6-2,6-0 |