Stadium: Center Court Round: 27 Ground: Clay
| ITF M15 Duffel | 2023/06/15 10:00 | Ryan Nijboer v Andrea Gola | 2-6,6-1,6-3 |
| ITF M15 Duffel | 2023/06/14 09:50 | Ryan Nijboer v Niklas Schell | 6-7,6-2,6-4 |
| ITF M25 La Nucia | 2023/06/01 13:00 | Ryan Nijboer v Yshai Oliel | 2-6,1-6 |
| ITF M25 La Nucia | 2023/06/01 07:00 | Ryan Nijboer v Jaime Caldes | 6-2,6-7,6-1 |
| ITF M25 La Nucia | 2023/05/31 09:35 | Ryan Nijboer v Noah Regas | 6-2,6-0 |
| ITF M25 La Nucia | 2023/05/30 08:00 | Ryan Nijboer v Alberto A Fernandez | 6-0,6-1 |
| ITF M15 Bucharest | 2023/05/26 10:10 | Petr Nesterov v Ryan Nijboer | 7-5,6-2 |
| ITF M15 Bucharest | 2023/05/25 10:05 | Pedro Iamachkine v Ryan Nijboer | 5-7,3-6 |
| ITF M15 Duffel | 2023/06/15 08:00 | John Sperle v Simon Beaupain | 7-6,4-6,7-6 |
| ITF M15 Duffel | 2023/06/13 08:00 | John Sperle v Alessio Basile | 6-4,6-4 |
| ITF M15 Duffel | 2023/06/12 12:00 | John Sperle v Edouard Villoslada | 6-3,6-2 |
| ITF M15 Duffel | 2023/06/11 12:30 | John Sperle v Isac Stroemberg | 6-3,6-2 |
| Challenger Troisdorf | 2023/05/28 10:25 | Terence Atmane v John Sperle | 6-3,6-4 |
| ITF M25 Bodrum | 2023/05/23 09:00 | John Sperle v Jules Marie | 1-6,2-6 |
| ITF M25 Bodrum | 2023/05/22 07:55 | John Sperle v Kuzma Gomziakov | 6-1,6-0 |
| ITF M15 Meerbusch | 2023/04/26 09:00 | Marcel Zielinski v John Sperle | 7-6,7-5 |