Stadium: Court 1 Round: 26 Ground: Clay
| Challenger Karlsruhe - Herredouble | 2023/07/08 10:30 | Oberleitner/Sandkaulen v Kopriva/Pervolarakis | 6-1,6-1 |
| Challenger Karlsruhe - Herredouble | 2023/07/07 14:05 | Oberleitner/Sandkaulen v Matuszewski/Romios | 6-3,4-6,10-4 |
| Challenger Karlsruhe - Herredouble | 2023/07/06 11:50 | Oberleitner/Sandkaulen v Libietis/Walkow | 3-6,7-6,11-9 |
| Challenger Karlsruhe - Herredouble | 2023/07/05 09:00 | Jebavy/Verbeek v Oberleitner/Sandkaulen | 3-6,3-6 |
| Challenger Poznan - Herredouble | 2023/06/20 15:45 | Liutarevich/Manafov v Oberleitner/Sandkaulen | 6-3,6-4 |
| Challenger Bratislava - Herredouble | 2023/06/17 08:30 | Behar/Pavlasek v Oberleitner/Sandkaulen | 6-4,6-4 |
| Challenger Bratislava - Herredouble | 2023/06/16 12:00 | Sabanov/Sabanov v Oberleitner/Sandkaulen | 6-3,4-6,4-10 |
| Challenger Bratislava - Herredouble | 2023/06/15 14:15 | Oberleitner/Sandkaulen v Kolar/Zelenay | 3-6,7-5,10-6 |