Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2023/06/22 06:30 | Tobias Slanina v Johannes Willeke | W | 3-2 |
| Challenger Series TT | 2023/07/13 08:30 | Tobias Slanina v Makoto Nogami | W | 3-1 |
| Challenger Series TT | 2023/07/04 10:30 | Tobias Slanina v David Reitspies | L | 0-3 |
| Challenger Series TT | 2023/07/04 07:50 | Tobias Slanina v Benjamin Fruchart | L | 1-3 |
| Challenger Series TT | 2023/07/03 19:10 | Tobias Slanina v Mathias Golab | W | 3-2 |
| Challenger Series TT | 2023/07/03 14:30 | Tobias Slanina v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/07/03 12:30 | Tobias Slanina v Daniel Rinderer | L | 1-3 |
| Challenger Series TT | 2023/07/03 09:10 | Kirill Fadeev v Tobias Slanina | L | 3-1 |
| Challenger Series TT | 2023/07/03 07:10 | Tobias Slanina v Akito Itagaki | W | 3-0 |
| Challenger Series TT | 2023/07/13 07:50 | Dauud Cheaib v Johannes Willeke | L | 3-1 |
| Challenger Series TT | 2023/07/11 09:50 | Johannes Willeke v Benjamin Fruchart | L | 0-3 |
| Challenger Series TT | 2023/07/11 06:30 | Johannes Willeke v Akos Kishegyi | L | 2-3 |
| Challenger Series TT | 2023/07/10 17:50 | Johannes Willeke v Kestutis Zeimys | L | 2-3 |
| Challenger Series TT | 2023/07/10 16:30 | Johannes Willeke v Armin Alicic | L | 0-3 |
| Challenger Series TT | 2023/07/10 11:50 | Johannes Willeke v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/07/10 09:10 | Johannes Willeke v Damian Zech | L | 1-3 |
| Challenger Series TT | 2023/07/10 06:30 | Johannes Willeke v Samuel Amann | W | 3-1 |