Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/07/17 06:30 | Hannes Hormann v Daniel Rinderer | L | 0-3 |
| 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 | 2023/07/17 07:10 | Michael Engelhardt v Armin Alicic | W | 3-1 |
| Challenger Series TT | 2023/07/14 09:50 | Michael Engelhardt v Antonin Gavlas | L | 0-3 |
| Challenger Series TT | 2023/07/14 06:30 | Michael Engelhardt v Johannes Willeke | W | 3-1 |
| Challenger Series TT | 2023/07/13 17:50 | Michael Engelhardt v Makoto Nogami | W | 3-1 |
| Challenger Series TT | 2023/07/13 16:30 | Michael Engelhardt v Tobias Slanina | W | 3-2 |
| Challenger Series TT | 2023/07/13 11:50 | Michael Engelhardt v Dauud Cheaib | L | 2-3 |
| Challenger Series TT | 2023/07/13 09:10 | Michael Engelhardt v Benjamin Fruchart | L | 1-3 |
| Challenger Series TT | 2023/07/13 06:30 | Michael Engelhardt v Kirill Fadeev | L | 1-3 |