Stadium: Court 7 Round: 25 Ground: Clay
| ITF M15 Allershausen | 2023/09/02 12:00 | Adrian Oetzbach v Kai Lemstra | 6-4,6-3 |
| ITF M15 Allershausen | 2023/09/01 15:25 | Kai Lemstra v Daniel De Jonge | 7-5,6-1 |
| ITF M15 Allershausen | 2023/08/31 12:15 | Kai Lemstra v Alazmeh, Taym | 6-2,6-2 |
| ITF M15 Allershausen | 2023/08/30 10:00 | Luca Wiedenmann v Kai Lemstra | 3-6,1-6 |
| ITF M15 Trier | 2023/08/24 10:30 | Max Wiskandt v Kai Lemstra | 6-4,6-4 |
| 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 Haerteis, Johannes | 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 Haren | 2023/09/05 08:00 | Michael Shaw v Mika Lipp | 3-6,3-6 |
| ITF M15 Haren | 2023/09/04 11:00 | Sam Bakker v Mika Lipp | 4-6,4-6 |
| ITF M15 Allershausen | 2023/08/30 13:45 | Mika Lipp v Jannik Maute | 3-6,2-6 |
| ITF M15 Allershausen | 2023/08/30 08:00 | Mika Lipp v Patzanovsky, Christopher | 6-1,6-2 |
| ITF M15 Allershausen | 2023/08/28 12:00 | Mika Lipp v Steinorth, Torben | 4-6,6-1,10-5 |
| ITF M15 Trier | 2023/08/24 15:00 | Tom Gentzsch v Mika Lipp | 6-4,1-6,7-6 |
| ITF M15 Trier | 2023/08/22 13:15 | Albert Saar v Mika Lipp | 0-6,4-6 |
| ITF M15 Ueberlingen | 2023/08/16 08:00 | Hazem Naw v Mika Lipp | 7-5,6-7,7-5 |