| ITF M15 Nyiregyhaza | 2025/06/19 09:30 | Nikita Mashtakov v Jonas Gundacker | 6-1,6-2 |
| ITF M15 Nyiregyhaza | 2025/06/18 09:30 | Jonas Gundacker v Patrik Meszaros | 4-6,6-3,7-5 |
| ITF M15 Klagenfurt | 2025/06/03 12:30 | Jonas Gundacker v Anton Matusevich | 7-5,2-6,2-5 |
| ITF M15 Gyula | 2025/05/28 09:30 | Paulo A S Dos Santos v Jonas Gundacker | 6-1,6-4 |
| UTR Pro Maria Lanzendorf | 2025/05/04 08:40 | Jonas Gundacker v Norbert Marosik | 3-6,2-6 |
| UTR Pro Maria Lanzendorf | 2025/05/03 09:30 | Sebastian Prechtel v Jonas Gundacker | 6-1,5-7,2-6 |
| UTR Pro Maria Lanzendorf | 2025/05/01 07:00 | Jonas Gundacker v Roman Garkavenko | 6-4,6-1 |
| UTR Pro Maria Lanzendorf | 2025/04/30 10:10 | Jonas Gundacker v Stepan Baum | 7-6,5-7,7-5 |
| ITF M15 Casablanca | 2025/06/29 11:00 | Damien Wenger v Stijn Slump | 5-7,7-6,6-3 |
| ITF M15 Casablanca | 2025/06/28 14:00 | Mario G Fernandez v Stijn Slump | 7-5,1-6,6-7 |
| ITF M15 Casablanca | 2025/06/27 13:00 | Amine Jamji v Stijn Slump | 3-6,1-6 |
| ITF M15 Casablanca | 2025/06/26 11:30 | Maximilian Figl v Stijn Slump | 7-6,3-6,2-6 |
| ITF M15 Casablanca | 2025/06/25 14:06 | Yazid Lahjomri v Stijn Slump | 0-6,2-6 |
| ITF M15 Casablanca | 2025/06/18 12:26 | Stijn Slump v Walid Ahouda | 2-6,2-6 |
| ITF M25 Villeneuve-Loubet | 2025/06/11 12:31 | Stijn Slump v Laurent Lokoli | 6-3,1-6,3-6 |
| ITF M25 Villeneuve-Loubet | 2025/06/10 12:46 | Stijn Slump v Daniel Jade | 6-1,6-3 |