Stadium: Court 2 Round: 62 Ground: Clay
| ITF M15 Xativa | 2023/08/01 15:30 | Stijn Slump v Facundo Juarez | 1-6,4-6 |
| ITF M25 Denia | 2023/07/26 13:25 | Dali Blanch v Stijn Slump | 6-4,7-5 |
| ITF M25 Denia | 2023/07/25 09:35 | Stijn Slump v Jorge Plans | 6-3,6-3 |
| ITF M25 Denia | 2023/07/24 14:30 | Stijn Slump v Albert Pedrico Kravtsov | 7-5,6-3 |
| ITF M25 Denia | 2023/07/23 09:00 | Stijn Slump v Ivan Zaytsev | 6-0,6-4 |
| Challenger Amersfoort | 2023/07/16 09:00 | Mathys Erhard v Stijn Slump | 6-2,6-4 |
| ITF M25 Esch/Alzette | 2023/07/12 09:45 | Stijn Slump v Kai Wehnelt | 1-6,6-3,3-6 |
| ITF M25 Esch/Alzette | 2023/07/10 14:00 | Stijn Slump v Ruben Hartig | 6-2,6-4 |
| ITF M15 Eupen | 2023/08/07 07:00 | Julian Peter v Leon Formella | 4-6,2-6 |
| ITF M15 Novi Sad | 2023/07/31 07:00 | Daniil Ostapenkov v Leon Formella | 6-1,6-2 |
| ITF M25 Bacau | 2023/07/23 08:30 | Leon Formella v Louis Allen | 2-6,4-6 |
| ITF M15 Uslar | 2023/07/17 09:00 | Leon Formella v Jeremy Schifris | 1-6,1-6 |
| ITF M25 Grasse | 2023/06/12 07:30 | Pablo Trochu v Leon Formella | 6-1,6-0 |
| ITF M25 Grasse | 2023/06/11 10:25 | Leon Formella v Laurent Julia Calac | 6-3,7-5 |
| ITF M25 Jablonec Nad Nisou | 2023/05/28 09:00 | Leon Formella v Jiri Jenicek | 2-6,3-6 |
| ITF M25 Most | 2023/05/22 08:00 | Michael Agwi v Leon Formella | 6-2,6-0 |