Estadio: Ochsenhausen, Germany
| Challenger Series TT | 2023/07/03 07:50 | Dennis Klein v David Reitspies | W | 3-1 |
| Challenger Series TT | 2023/02/07 13:50 | David Reitspies v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/02/07 08:10 | David Reitspies v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/07/06 07:50 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2023/07/04 13:30 | Dennis Klein v Benjamin Fruchart | W | 3-2 |
| Challenger Series TT | 2023/07/04 11:25 | Kirill Fadeev v Dennis Klein | W | 2-3 |
| Challenger Series TT | 2023/07/04 09:10 | Dennis Klein v Mathias Golab | W | 3-0 |
| Challenger Series TT | 2023/07/03 19:50 | Dennis Klein v Benjamin Fruchart | L | 0-3 |
| Challenger Series TT | 2023/07/03 17:10 | Dennis Klein v Daniel Rinderer | W | 3-1 |
| Challenger Series TT | 2023/07/03 14:30 | Tobias Slanina v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/07/03 11:50 | Kirill Fadeev v Dennis Klein | L | 3-1 |
| Challenger Series TT | 2023/07/06 07:10 | Hannes Hormann v David Reitspies | W | 1-3 |
| Challenger Series TT | 2023/07/04 12:50 | Kirill Fadeev v David Reitspies | W | 2-3 |
| Challenger Series TT | 2023/07/04 12:05 | David Reitspies v Benjamin Fruchart | L | 1-3 |
| Challenger Series TT | 2023/07/04 10:30 | Tobias Slanina v David Reitspies | W | 0-3 |
| Challenger Series TT | 2023/07/04 06:30 | Kirill Fadeev v David Reitspies | W | 1-3 |
| Challenger Series TT | 2023/07/03 18:30 | David Reitspies v Akito Itagaki | W | 3-2 |
| Challenger Series TT | 2023/07/03 15:10 | David Reitspies v Daniel Rinderer | W | 3-0 |
| Challenger Series TT | 2023/07/03 13:10 | Benjamin Fruchart v David Reitspies | W | 1-3 |