Stadium: C Round: 27 Ground: Clay
| ITF Germany F7 | 2018/07/12 15:00 | Merckx, Jonas v Jakub Paul | 6-3,7-6 |
| ITF Germany F7 | 2018/07/11 11:45 | Merckx, Jonas v Lucas Gerch | 6-4,3-6,6-3 |
| ITF Belgium F3 | 2018/07/05 13:30 | Georgii Kravchenko v Merckx, Jonas | 1-6,3-6 |
| ITF Belgium F3 | 2018/07/03 11:05 | Tsivadze, George v Merckx, Jonas | 7-5,3-6,3-6 |
| ITF Belgium F2 | 2018/06/26 10:15 | Gigounon, Germain v Merckx, Jonas | 6-3,6-1 |
| ITF Belgium F1 | 2018/06/22 11:00 | Yann Marti v Merckx, Jonas | 5-7,7-6,6-0 |
| ITF Belgium F1 | 2018/06/21 15:05 | Alexis Gautier v Merckx, Jonas | 4-6,3-6 |
| ITF Belgium F1 | 2018/06/19 09:55 | Herman, Louis v Merckx, Jonas | 3-6,0-6 |
| ITF Germany F7 | 2018/07/12 10:00 | Klegou, Alexis v Martinez, Mirko | 3-6,6-3,7-6 |
| ITF Germany F7 | 2018/07/10 11:35 | Klegou, Alexis v Kai Lemstra | 6-7,6-4,6-3 |
| Coupe Davis | 2018/06/23 09:05 | Klegou, Alexis v Mzai, Ismael Changawa Ruwa | 7-6,6-4 |
| Coupe Davis | 2018/06/22 08:40 | Klegou, Alexis v Paul, Christian | 6-2,6-1 |
| Coupe Davis | 2018/06/21 08:40 | Klegou, Alexis v Ernest Habiyambere | 6-2,6-2 |
| Coupe Davis | 2018/06/19 08:25 | Klegou, Alexis v Nkwenti, Blaise | 6-3,7-6 |
| ITF Spain F14 | 2018/06/05 09:30 | Bensoussan, Samuel v Klegou, Alexis | 6-3,6-1 |
| ITF Spain F14 Qual | 2018/06/03 08:30 | Klegou, Alexis v Canas Garcia, Juan Pablo | 6-2,6-4 |