Stadium: Court 3 Round: 25 Ground: Clay
| ITF M25 - Koksijde | 2023/08/16 13:10 | Buvaysar Gadamauri v Stijn Slump | 7-6,6-2 |
| ITF M25 - Koksijde | 2023/08/15 11:00 | Stijn Slump v Corentin Denolly | 6-0,6-4 |
| ITF M25 - Koksijde | 2023/08/14 08:00 | Stijn Slump v Olivier Rojas | 7-5,6-3 |
| ITF M25 - Koksijde | 2023/08/13 13:35 | Stijn Slump v Mihaita Daniel Damian | 6-2,6-1 |
| ITF M15 - Eupen | 2023/08/10 11:30 | Stijn Slump v Marlon Vankan | 3-6,1-6 |
| ITF M15 - Eupen | 2023/08/09 16:50 | Stijn Slump v David Fix | 3-6,6-4,6-1 |
| ITF M15 - Eupen | 2023/08/08 14:00 | Stijn Slump v Felix Mischker | 6-3,6-1 |
| ITF M15 - Eupen | 2023/08/08 08:00 | Stijn Slump v Leon Formella | 6-4,6-2 |
| ITF M15 - Eupen | 2023/08/10 09:00 | Luca Wiedenmann v Maik Steiner | 3-6,6-3,6-1 |
| ITF M15 - Eupen | 2023/08/09 11:25 | Maik Steiner v Leopold Zima | 6-3,6-3 |
| ITF M25 - Wetzlar | 2023/08/04 15:25 | Maik Steiner v Orlando Luz | 4-6,2-6 |
| ITF M25 - Wetzlar | 2023/08/04 09:35 | Maik Steiner v Vincent Marysko | 6-2,6-1 |
| ITF M25 - Wetzlar | 2023/08/03 11:30 | Matteo Martineau v Maik Steiner | 3-6,6-3,1-6 |
| ITF M15 - Uslar | 2023/07/18 10:00 | Maik Steiner v Olle Wallin | 6-7,4-6 |
| ITF M15 - Rabat | 2023/06/14 12:40 | Maik Steiner v Matias Zukas | 4-6,3-6 |
| ITF M15 - Tanger | 2023/06/07 14:00 | Maik Steiner v Kai Lemstra | 1-6,5-7 |