Stadium: Center Court Round: 19 Ground: Clay
| Challenger Augsburg | 2023/08/20 09:40 | Julian Ocleppo v Christoph Negritu | 3-6,3-6 |
| ITF M15 - Überlingen | 2023/08/16 09:40 | Christoph Negritu v Arthur Nagel | 6-7,5-7 |
| Challenger - Lüdenscheid | 2023/07/30 10:25 | Christoph Negritu v Wilson Leite | 6-7,6-3,3-6 |
| ITF - M15 Uslar | 2023/07/22 09:45 | Christoph Negritu v Sebastian Prechtel | 2-6,4-6 |
| ITF - M15 Uslar | 2023/07/21 10:00 | Jeremy Schifris v Christoph Negritu | 1-6,2-6 |
| ITF - M15 Uslar | 2023/07/20 12:25 | Esteban Bruna v Christoph Negritu | 2-6,0-6 |
| ITF - M15 Uslar | 2023/07/19 16:50 | Rostislav Galfinger v Christoph Negritu | 2-6,0-6 |
| ITF - M15 Monastir | 2023/06/08 08:30 | Christoph Negritu v Thomas Braithwaite | 2-6,6-4,4-6 |
| Challenger Augsburg | 2023/08/20 08:00 | Nicola Kuhn v Sebastian Gima | 6-1,6-3 |
| Challenger - Meerbusch | 2023/08/08 10:25 | Nicola Kuhn v Jan Choinski | 6-7,4-6 |
| ITF M25 - Wetzlar | 2023/08/04 12:30 | Nicola Kuhn v Tristan Lamasine | 6-7,4-6 |
| ITF M25 - Wetzlar | 2023/08/04 08:00 | Luca Wiedenmann v Nicola Kuhn | 4-6,4-6 |
| ITF M25 - Wetzlar | 2023/08/03 08:00 | Nicola Kuhn v Martin Benes | 6-4,6-1 |
| ITF - M15 Metzingen | 2023/07/30 11:00 | Nicola Kuhn v Daniel Paty | 6-4,6-1 |
| ITF - M15 Metzingen | 2023/07/29 11:30 | Sander Jong v Nicola Kuhn | 3-6,3-6 |
| ITF - M15 Metzingen | 2023/07/28 13:50 | Stefan Popovic v Nicola Kuhn | 4-6,4-6 |