Stadium: CEE Logistic Round: 26 Ground: Clay
| ITF M15 Allershausen | 2023/08/30 12:20 | Jakob Schnaitter v Yannik Kelm | 6-4,6-7,2-6 |
| ITF M15 Huy | 2023/08/23 14:30 | Yannik Kelm v Jurriaan Bol | 6-7,1-6 |
| ITF M15 Kottingbrunn | 2023/08/17 09:35 | Neil Oberleitner v Yannik Kelm | 6-4,7-6 |
| ITF M15 Kottingbrunn | 2023/08/16 10:00 | Dominik Kellovsky v Yannik Kelm | 6-7,3-6 |
| ITF M15 Frankfurt Nad Mohanem | 2023/08/10 15:00 | Yannik Kelm v Florian Broska | 4-6,6-4,2-6 |
| ITF M15 Frankfurt Nad Mohanem | 2023/08/09 12:00 | Taym Alazmeh v Yannik Kelm | 6-7,6-3,1-6 |
| ITF M15 Metzingen | 2023/07/27 11:00 | Stefan Popovic v Yannik Kelm | 6-4,4-6,6-2 |
| ITF M15 Metzingen | 2023/07/26 11:00 | Leopold Zima v Yannik Kelm | 5-7,6-2,1-6 |
| ITF M15 Allershausen | 2023/08/30 11:35 | Gregor Ramskogler v Christoph Negritu | 5-7,3-6 |
| Challenger Augsburg | 2023/08/22 14:25 | Christoph Negritu v Oriol Roca Batalla | 2-6,7-6,3-6 |
| Challenger Augsburg | 2023/08/21 08:00 | Christoph Negritu v Nicola Kuhn | 2-6,6-3,7-5 |
| 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 Luedenscheid | 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 |