Stadium: Center Court Round: 62 Ground: Clay
| ITF M15 Metzingen | 2023/07/23 12:00 | Adrian Oetzbach v Alen Mujakic | 6-0,6-3 |
| ITF M15 Uslar | 2023/07/20 11:00 | Stefan Popovic v Adrian Oetzbach | 7-6,6-4 |
| ITF M15 Uslar | 2023/07/19 14:25 | Adrian Oetzbach v Franco Emanuel Egea | 6-1,7-6 |
| ITF M25 Kassel | 2023/07/12 13:20 | Joao Domingues v Adrian Oetzbach | 2-6,7-6,6-2 |
| ITF M25 Kassel | 2023/07/11 10:55 | Adrian Oetzbach v Vincent Marysko | 6-4,6-4 |
| ITF M25 Kassel | 2023/07/10 07:50 | Adrian Oetzbach v Samuel Rovai | 6-1,6-1 |
| ITF M25 Marburg | 2023/07/08 10:50 | Timo Stodder v Adrian Oetzbach | 6-1,6-4 |
| ITF M25 Marburg | 2023/07/07 12:30 | Adrian Oetzbach v Martin Krumich | 6-3,6-4 |
| ITF M15 Metzingen | 2023/07/23 07:30 | Aaron James Williams v Noel Larwig | 7-5,6-2 |
| ITF M15 Uslar | 2023/07/17 13:00 | Aaron James Williams v Rostislav Galfinger | 6-7,2-6 |
| ITF M15 Uslar | 2023/07/17 08:00 | Karlo Cubelic v Aaron James Williams | 6-7,6-4,6-10 |
| ITF M25 Kassel | 2023/07/10 09:45 | Michael Agwi v Aaron James Williams | 5-7,6-4,10-8 |
| ITF M25 The Hague | 2023/07/02 08:00 | Jakub Wojcik v Aaron James Williams | 7-6,5-7,11-9 |
| ITF M15 Kamen | 2023/06/26 08:00 | Lambert Ruland v Aaron James Williams | 6-4,6-2 |
| ITF M15 Saarlouis | 2023/06/18 09:00 | Milan Welte v Aaron James Williams | 6-4,7-6 |
| ITF M15 Duffel | 2023/06/11 11:00 | Aaron James Williams v Lodewijk Weststrate | 2-6,7-6,5-10 |