Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/07/07 10:30 | Hannes Hormann v Dauud Cheaib | L | 1-3 |
| Challenger Series TT | 2023/07/07 07:50 | Hannes Hormann v Benjamin Fruchart | L | 0-3 |
| Challenger Series TT | 2023/07/06 19:10 | Hannes Hormann v Mathias Golab | W | 3-1 |
| Challenger Series TT | 2023/07/06 14:30 | Hannes Hormann v Dennis Klein | L | 0-3 |
| 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 | 2023/07/04 08:30 | Akito Itagaki v Daniel Rinderer | W | 2-3 |
| Challenger Series TT | 2023/07/04 07:10 | Mathias Golab v Daniel Rinderer | W | 1-3 |
| Challenger Series TT | 2023/07/03 17:10 | Dennis Klein v Daniel Rinderer | L | 3-1 |
| Challenger Series TT | 2023/07/03 15:10 | David Reitspies v Daniel Rinderer | L | 3-0 |
| Challenger Series TT | 2023/07/03 12:30 | Tobias Slanina v Daniel Rinderer | W | 1-3 |
| Challenger Series TT | 2023/07/03 11:10 | Benjamin Fruchart v Daniel Rinderer | L | 3-2 |
| Challenger Series TT | 2023/07/03 06:30 | Kirill Fadeev v Daniel Rinderer | L | 3-1 |
| Challenger Series TT | 2023/02/21 10:10 | Daniel Rinderer v Miguel Nunez | L | 2-3 |