Stadium: Center Court Round: 25 Ground: Clay
| Challenger Pullach Qual | 2018/08/04 15:25 | Yannick Mertens v Steven Diez | 2-6,2-6 |
| Challenger Astana | 2018/07/17 07:45 | Yannick Mertens v Jurij Rodionov | 5-7,0-6 |
| ITF France F13 | 2018/07/13 17:20 | Yannick Mertens v Sora Fukuda | 6-2,3-6,4-6 |
| ITF France F13 | 2018/07/12 18:30 | Yannick Mertens v Florian Lakat | 6-3,6-4 |
| ITF France F13 | 2018/07/10 13:40 | Yannick Mertens v Hugo Voljacques | 6-2,6-2 |
| Challenger Recanati Qual | 2018/07/02 10:00 | Tomas Barrios Vera v Yannick Mertens | 7-6,6-3 |
| Challenger Recanati Qual | 2018/07/01 08:00 | Lorenzo Frigerio v Yannick Mertens | 4-6,4-6 |
| Challenger Recanati Qual | 2018/06/30 11:15 | Michel Vernier v Yannick Mertens | 2-6,4-6 |
| ITF Belgium F7 | 2018/08/11 12:00 | Tomas Martin Etcheverry v Sidane Pontjodikromo | 6-2,6-3 |
| ITF Belgium F7 | 2018/08/10 11:30 | Stefano Baldoni v Sidane Pontjodikromo | 5-7,6-3,1-6 |
| ITF Belgium F7 | 2018/08/09 11:00 | Michael Geerts v Sidane Pontjodikromo | 4-6,6-3,2-6 |
| ITF Belgium F7 | 2018/08/07 08:30 | Sidane Pontjodikromo v Juan Carlos Saez | 4-6,6-0,6-3 |
| ITF Belgium F7 Qual | 2018/08/06 10:40 | Sidane Pontjodikromo v Tomas Gerini | 6-0,6-3 |
| ITF Belgium F7 Qual | 2018/08/05 11:00 | Sidane Pontjodikromo v Nick Broekhof | 6-3,6-0 |
| ITF Belgium F5 | 2018/07/24 16:00 | Sidane Pontjodikromo v Juan Carlos Saez | 2-6,2-6 |
| ITF Netherlands F3 | 2018/07/15 11:50 | Sidane Pontjodikromo v Tim Van Rijthoven | 2-6,4-6 |