Stadium: Court 10 Round: 25 Ground: Clay
| ITF M25 - Alkmaar | 2021/06/23 16:10 | Kai Wehnelt v Sander Jong | 6-2,7-6 |
| Challenger - Poznan | 2023/06/19 09:00 | Rudolf Molleker v Kai Wehnelt | 6-4,6-4 |
| Challenger - Poznan | 2023/06/18 08:30 | Kai Wehnelt v Kalin Ivanovski | 6-3,3-6,6-3 |
| ITF M15 - Nyiregyhaza | 2023/06/07 08:00 | Peter Nad v Kai Wehnelt | 6-4,1-6,6-3 |
| ITF M25 - Reggio Emilia | 2023/05/19 09:00 | Julian Ocleppo v Kai Wehnelt | 6-4,3-6,6-2 |
| ITF M25 - Reggio Emilia | 2023/05/17 10:00 | Gian Marco Ortenzi v Kai Wehnelt | 0-6,2-6 |
| ITF M25 - Reggio Emilia | 2023/05/15 16:30 | Kai Wehnelt v Federico Marchetti | 6-1,6-0 |
| ITF M25 - Reggio Emilia | 2023/05/15 09:50 | Kai Wehnelt v Noah Perfetti | 6-3,3-6,10-6 |
| Challenger - Francavilla | 2023/05/07 16:40 | Stefano Travaglia v Kai Wehnelt | 6-4,6-2 |
| ITF M15 - Alkmaar | 2023/07/02 12:10 | Elmer Moller v Sander Jong | 4-6,3-6 |
| ITF M15 - Alkmaar | 2023/07/01 11:50 | Luke Simkiss v Sander Jong | 4-6,1-6 |
| ITF M15 - Alkmaar | 2023/06/30 12:05 | Ryan Nijboer v Sander Jong | 3-6,4-6 |
| ITF M15 - Alkmaar | 2023/06/27 11:10 | Sander Jong v Matthew Dellavedova | 6-4,6-2 |
| ITF M15 - Saarlouis | 2023/06/25 12:00 | Sander Jong v Jeffrey Von Der Schulenburg | 6-1,6-0 |
| ITF M15 - Saarlouis | 2023/06/24 11:00 | Joao Fonseca v Sander Jong | 4-6,3-6 |
| ITF M15 - Saarlouis | 2023/06/23 12:30 | Lodewijk Weststrate v Sander Jong | 3-6,7-5,2-6 |
| ITF M15 - Saarlouis | 2023/06/22 12:30 | Sander Jong v Alex Knaff | 6-4,6-3 |