Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/04/04 07:10 | Dennis Klein v Dauud Cheaib | W | 3-0 |
| Challenger Series TT | 2023/03/28 12:50 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2023/03/28 08:30 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2023/03/07 14:30 | Dennis Klein v Dauud Cheaib | W | 3-2 |
| Challenger Series TT | 2023/03/06 16:50 | Dauud Cheaib v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/02/06 13:30 | Dauud Cheaib v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/01/09 16:10 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2022/09/05 17:10 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2023/05/08 11:10 | Antonin Gavlas v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/05/08 06:30 | Tobias Slanina v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/05/05 13:30 | Dennis Klein v Benjamin Fruchart | W | 3-1 |
| Challenger Series TT | 2023/05/05 11:25 | Dennis Klein v Kirill Fadeev | W | 3-0 |
| Challenger Series TT | 2023/05/05 09:10 | Dennis Klein v Benjamin Fruchart | W | 3-0 |
| Challenger Series TT | 2023/05/04 19:50 | Dennis Klein v Akito Itagaki | W | 3-1 |
| Challenger Series TT | 2023/05/04 17:10 | Dennis Klein v Kirill Fadeev | W | 3-1 |
| Challenger Series TT | 2023/05/04 14:30 | Damian Zech v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/04/18 13:30 | Simon Berglund v Dauud Cheaib | L | 3-2 |
| Challenger Series TT | 2023/04/18 12:05 | Dauud Cheaib v Dillon Chambers | W | 3-1 |
| Challenger Series TT | 2023/04/18 07:50 | Damian Zech v Dauud Cheaib | W | 1-3 |
| Challenger Series TT | 2023/04/17 19:50 | Sven Happek v Dauud Cheaib | W | 0-3 |
| Challenger Series TT | 2023/04/17 17:50 | Michael Engelhardt v Dauud Cheaib | W | 1-3 |
| Challenger Series TT | 2023/04/17 15:50 | Dauud Cheaib v Dillon Chambers | W | 3-0 |
| Challenger Series TT | 2023/04/17 13:10 | Dauud Cheaib v Siddharta Almeida | W | 3-0 |
| Challenger Series TT | 2023/04/17 11:10 | Dauud Cheaib v Makoto Nogami | W | 3-2 |