Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/05/29 08:30 | Dauud Cheaib v Peter Hribar | L | 2-3 |
| Challenger Series TT | 2023/05/16 12:50 | Dauud Cheaib v David Molnar | L | 1-3 |
| Challenger Series TT | 2023/05/16 11:25 | Yannick Vostes v Dauud Cheaib | L | 3-1 |
| Challenger Series TT | 2023/05/16 08:40 | Akos Kishegyi v Dauud Cheaib | W | 1-3 |
| Challenger Series TT | 2023/05/16 07:10 | Miguel Nunez v Dauud Cheaib | L | 3-2 |
| Challenger Series TT | 2023/05/16 05:40 | Marius Henninger v Dauud Cheaib | W | 1-3 |
| Challenger Series TT | 2023/05/15 15:50 | Dauud Cheaib v David Molnar | L | 2-3 |
| Challenger Series TT | 2023/05/15 13:10 | Dauud Cheaib v Norbert Tauler | W | 3-1 |
| Challenger Series TT | 2023/05/29 07:50 | Carlo Rossi v Karl Zimmermann | L | 3-0 |
| Challenger Series TT | 2023/03/10 11:30 | Karl Zimmermann v Dillon Chambers | L | 1-3 |
| Challenger Series TT | 2023/03/10 08:50 | Karl Zimmermann v Guilherme Teodoro | L | 1-3 |
| Challenger Series TT | 2023/03/09 20:10 | Karl Zimmermann v Thibault Poret | L | 0-3 |
| Challenger Series TT | 2023/03/09 15:30 | Karl Zimmermann v Damian Zech | W | 3-0 |
| Challenger Series TT | 2023/03/09 13:30 | Karl Zimmermann v Samuel Amann | W | 3-0 |
| Challenger Series TT | 2023/03/09 10:10 | Kirill Fadeev v Karl Zimmermann | L | 3-1 |
| Challenger Series TT | 2023/03/09 08:10 | Karl Zimmermann v Dimitrije Levajac | L | 0-3 |