Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/02/21 10:10 | Daniel Rinderer v Miguel Nunez | L | 2-3 |
| Challenger Series TT | 2023/02/21 07:30 | Daniel Rinderer v Dauud Cheaib | L | 1-3 |
| Challenger Series TT | 2023/02/20 16:50 | Daniel Rinderer v David Reitspies | L | 1-3 |
| Challenger Series TT | 2023/02/20 16:10 | Daniel Rinderer v Andrei Putuntica | L | 1-3 |
| Challenger Series TT | 2023/02/20 10:10 | Daniel Rinderer v Norbert Tauler | L | 2-3 |
| Challenger Series TT | 2023/02/20 07:30 | Daniel Rinderer v Pekka Pelz | W | 3-1 |
| Challenger Series TT | 2023/01/10 10:10 | Kestutis Zeimys v Daniel Rinderer | W | 2-3 |
| Challenger Series TT | 2023/01/10 08:10 | Daniel Rinderer v Dauud Cheaib | L | 2-3 |
| Challenger Series TT | 2023/03/10 10:10 | Damian Zech v Thibault Poret | L | 0-3 |
| Challenger Series TT | 2023/03/09 20:50 | Damian Zech v Guilherme Teodoro | L | 0-3 |
| Challenger Series TT | 2023/03/09 18:10 | Damian Zech v Samuel Amann | W | 3-2 |
| Challenger Series TT | 2023/03/09 15:30 | Karl Zimmermann v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/03/09 12:50 | Kirill Fadeev v Damian Zech | L | 3-0 |
| Challenger Series TT | 2023/03/09 10:50 | Damian Zech v Dimitrije Levajac | L | 0-3 |
| Challenger Series TT | 2023/03/09 08:50 | Damian Zech v Dillon Chambers | L | 1-3 |
| Challenger Series TT | 2023/03/03 09:30 | Marco Stefanidis v Damian Zech | W | 1-3 |