Stadium: Court 16 Round: 25 Ground: Clay
| ITF - Metzingen M15 | 2023/07/29 11:30 | Sander Jong v Nicola Kuhn | 3-6,3-6 |
| ITF - Metzingen M15 | 2023/07/28 10:50 | Kai Lemstra v Sander Jong | 6-3,0-6,2-6 |
| ITF - Metzingen M15 | 2023/07/27 11:00 | Giuseppe La Vela v Sander Jong | 1-6,7-6,5-7 |
| ITF - Metzingen M15 | 2023/07/26 12:30 | John Sperle v Sander Jong | 2-6,7-5,2-6 |
| Challenger Amersfoort | 2023/07/17 16:45 | Rudolf Molleker v Sander Jong | 6-4,7-6 |
| ITF - Haga M25 | 2023/07/07 12:35 | Sander Jong v Deney Wassermann | 3-6,6-7 |
| ITF - Haga M25 | 2023/07/06 16:10 | Jakub Wojcik v Sander Jong | 6-7,2-6 |
| ITF - Haga M25 | 2023/07/05 14:05 | Kai Wehnelt v Sander Jong | 1-6,2-6 |
| ITF - Esch/Alzette M25 | 2023/07/13 13:10 | Federico Agustin Gomez v Dax Donders | 6-2,6-1 |
| ITF - Esch/Alzette M25 | 2023/07/11 08:00 | Maxime Mora v Dax Donders | 2-6,4-6 |
| ITF - Haga M25 | 2023/07/04 12:40 | Dax Donders v Olaf Pieczkowski | 6-7,6-4,2-6 |
| ITF - Alkmaar M15 | 2023/06/29 14:55 | Dax Donders v Brian Bozemoj | 6-0,4-6,0-6 |
| ITF - Alkmaar M15 | 2023/06/28 17:30 | Andres Andrade v Dax Donders | 4-6,4-6 |
| ITF - Saarlouis M15 | 2023/06/20 10:00 | Dax Donders v Liam Gavrielides | 2-6,1-6 |
| ITF - Antalya M15 | 2023/05/07 07:00 | Dax Donders v Mikhail Gorokhov | 6-7,6-7 |
| ITF - Antalya M15 | 2023/05/03 07:30 | Peter Benjamin Privara v Dax Donders | 6-3,6-4 |