Stadium: CC Round: 26 Ground: Clay
| ITF M15 Trier | 2023/08/22 10:55 | Vit Kalina v Max Wiskandt | 5-7,3-6 |
| ITF M15 Überlingen | 2023/08/17 07:55 | Max Wiskandt v Aleksandre Metreveli | 6-7,6-7 |
| ITF M15 Überlingen | 2023/08/16 08:00 | Max Wiskandt v Dominik Recek | 6-3,6-2 |
| ITF M25 Wetzlar | 2023/08/04 10:00 | Tim Handel v Max Wiskandt | 7-6,1-6,6-2 |
| ITF M25 Wetzlar | 2023/08/03 07:55 | Max Wiskandt v Johann Lars | 6-1,2-6,7-6 |
| ITF M25 Wetzlar | 2023/08/01 11:15 | Max Wiskandt v Enzo Lima | 6-1,6-0 |
| ITF M25 Wetzlar | 2023/07/31 11:30 | Max Wiskandt v Michalis Sakellaridis | 6-2,6-2 |
| ITF M15 Uslar | 2023/07/18 15:55 | Stefan Popovic v Max Wiskandt | 7-5,6-3 |
| ITF M15 Trier | 2023/08/22 11:00 | Kai Lemstra v Adrian Oetzbach | 7-6,6-3 |
| ITF M15 Frankfurt Am Main | 2023/08/10 10:55 | Kai Lemstra v Johannes Haerteis | 7-5,4-6,2-6 |
| ITF M15 Frankfurt Am Main | 2023/08/08 09:00 | Kai Lemstra v Matthew William Donald | 6-3,6-1 |
| ITF M15 Metzingen | 2023/07/28 10:50 | Kai Lemstra v Sander Jong | 6-3,0-6,2-6 |
| ITF M15 Metzingen | 2023/07/27 15:00 | Kai Lemstra v Juan C P Angelo | 7-5,6-0 |
| ITF M15 Metzingen | 2023/07/26 12:30 | Stefanos Sakellaridis v Kai Lemstra | 3-6,3-6 |
| ITF M15 Tanger | 2023/06/08 11:00 | Kai Lemstra v Constantin Bittoun Kouzmine | 3-6,3-6 |
| ITF M15 Tanger | 2023/06/07 14:00 | Maik Steiner v Kai Lemstra | 1-6,5-7 |