Stadium: Indoor 2 Round: 26 Ground: Clay
| ITF M15 Huy | 2023/08/22 11:00 | John Sperle v Andrea Gola | 3-6,6-1,6-2 |
| ITF M25 Ystad | 2023/08/17 10:45 | John Sperle v Filip Cristian Jianu | 4-6,2-6 |
| ITF M25 Ystad | 2023/08/15 14:35 | John Sperle v Ethan Cook | 6-1,2-6,6-0 |
| Challenger Meerbusch | 2023/08/07 15:00 | Ergi Kirkin v John Sperle | 7-6,6-3 |
| Challenger Meerbusch | 2023/08/06 09:00 | John Sperle v Tommaso Compagnucci | 6-2,4-6,6-4 |
| Challenger Luedenscheid | 2023/07/30 15:25 | Hady Habib v John Sperle | 3-6,6-1,6-3 |
| ITF M15 Metzingen | 2023/07/26 12:30 | John Sperle v Sander Jong | 2-6,7-5,2-6 |
| ITF M15 Uslar | 2023/07/21 11:25 | Sebastian Prechtel v John Sperle | 6-3,6-1 |
| ITF M15 Huy | 2023/08/22 09:00 | Stijn Slump v Maik Steiner | 7-5,6-7,6-4 |
| 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 |