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 Trier | 2023/08/22 11:00 | Kai Lemstra v Adrian Oetzbach | 7-6,6-3 |
| UTR Pro Dubai | 2024/03/17 05:00 | Kai Lemstra v Lukas Velik | 6-3,6-3 |
| UTR Pro Dubai | 2024/03/16 05:00 | Kai Lemstra v Viktor Markov | 6-3,6-1 |
| UTR Pro Dubai | 2024/03/15 05:00 | Kai Lemstra v Ed Pudney | 6-1,6-2 |
| UTR Pro Dubai | 2024/03/14 07:00 | Kai Lemstra v Karol Filar | 2-6,1-6 |
| UTR Pro Dubai | 2024/03/13 05:00 | Jannik Maute v Kai Lemstra | 6-3,6-2 |
| UTR Pro Dubai | 2024/03/12 08:00 | Daniel Salazar v Kai Lemstra | 2-6,6-1,3-6 |
| UTR Pro Dubai | 2024/03/09 07:00 | Kai Lemstra v Kristian Juhas | 2-6,4-6 |
| UTR Pro Dubai | 2024/03/08 06:30 | Mert Naci Turker v Kai Lemstra | 6-1,2-6,1-6 |
| Challenger Hamburg | 2024/03/10 11:35 | Denis Yevseyev v Adrian Oetzbach | 6-7,7-5,6-2 |
| ITF M15 Sharm El Sheikh | 2024/03/07 10:25 | Michael Bassem Sobhy v Adrian Oetzbach | 3-6,6-3,6-1 |
| ITF M15 Sharm El Sheikh | 2024/03/06 11:40 | Joe Tyler v Adrian Oetzbach | 0-6,3-6 |
| ITF M15 Sharm El Sheikh | 2024/03/02 08:00 | Fares Zakaria v Adrian Oetzbach | 6-2,7-5 |
| ITF M15 Sharm El Sheikh | 2024/03/01 08:00 | Szymon Kielan v Adrian Oetzbach | 3-6,4-6 |
| ITF M15 Sharm El Sheikh | 2024/02/29 08:30 | Michael Bassem Sobhy v Adrian Oetzbach | 1-6,6-4,1-6 |
| ITF M15 Sharm El Sheikh | 2024/02/28 11:10 | Karim Ibrahim v Adrian Oetzbach | 3-6,3-6 |
| ITF M15 Sharm El Sheikh | 2024/02/22 10:25 | Mees Rottgering v Adrian Oetzbach | 6-2,2-6,7-5 |