Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/02/02 17:30 | Dennis Klein v Hannes Hormann | L | 3-0 |
| Challenger Series TT | 2023/07/06 12:30 | Hannes Hormann v Liang Qiu | L | 0-3 |
| Challenger Series TT | 2023/07/06 09:10 | Johannes Willeke v Hannes Hormann | W | 2-3 |
| Challenger Series TT | 2023/07/06 07:10 | Hannes Hormann v David Reitspies | L | 1-3 |
| Challenger Series TT | 2023/02/03 10:10 | Damian Zech v Hannes Hormann | W | 1-3 |
| Challenger Series TT | 2023/02/03 08:10 | Hannes Hormann v Kirill Fadeev | L | 0-3 |
| Challenger Series TT | 2023/02/02 20:10 | Kenan Hrnic v Hannes Hormann | W | 0-3 |
| Challenger Series TT | 2023/02/02 17:30 | Dennis Klein v Hannes Hormann | L | 3-0 |
| Challenger Series TT | 2023/02/02 14:50 | Hannes Hormann v Anton Limonov | L | 1-3 |
| Challenger Series TT | 2023/07/06 11:50 | Johannes Willeke v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/07/06 09:50 | Dennis Klein v David Reitspies | W | 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 |