Stadium: CEE Logistic Round: 26 Ground: Clay
| ITF M15 Trier | 2022/08/22 12:20 | Adrian Oetzbach v Justin Engel | 4-6,6-1,8-10 |
| ITF M15 Oberhaching | 2023/02/12 09:00 | Justin Engel v Michael Gloeckler | 4-6,3-6 |
| ITF M15 Antalya | 2022/10/24 10:30 | Nicolas Parizzia v Justin Engel | 6-0,6-2 |
| ITF M15 Antalya | 2022/10/23 07:00 | Justin Engel v Umut Kaan Yenilmez | 6-3,6-1 |
| ITF M15 Antalya | 2022/10/19 10:10 | Justin Engel v Marsel Ilhan | 4-6,4-6 |
| Challenger Ismaning | 2022/10/09 12:55 | Justin Engel v Martin Krumich | 4-6,6-3,3-6 |
| ITF M15 Allershausen | 2022/08/31 10:40 | Marvin Netuschil v Justin Engel | 7-6,6-4 |
| ITF M15 Trier | 2022/08/24 15:30 | Quentin Folliot v Justin Engel | 6-0,6-2 |
| ITF M15 Trier | 2022/08/22 12:20 | Adrian Oetzbach v Justin Engel | 4-6,6-1,8-10 |
| ITF M15 Alkmaar | 2023/06/28 09:00 | Michiel de Krom v Adrian Oetzbach | 6-2,4-6,6-1 |
| ITF M15 Alkmaar | 2023/06/26 08:00 | Adrian Oetzbach v Tomi Van den Ham | 6-4,6-2 |
| ITF M15 Alkmaar | 2023/06/25 10:00 | Adrian Oetzbach v Miko Wassermann | 6-0,6-2 |
| ITF M15 Duffel | 2023/06/13 12:00 | Jeremy Jahn v Adrian Oetzbach | 6-2,6-1 |
| ITF M15 Duffel | 2023/06/12 10:00 | Adrian Oetzbach v Lodewijk Weststrate | 7-5,1-6,12-10 |
| ITF M15 Duffel | 2023/06/11 12:30 | Adrian Oetzbach v Thorben Sannen | 6-2,6-1 |
| ITF M15 Vaasa | 2023/06/08 09:40 | Adrian Oetzbach v Jonathan Mridha | 6-2,3-6,3-6 |
| ITF M15 Vaasa | 2023/06/07 12:50 | Tuncay Duran v Adrian Oetzbach | 4-6,4-6 |