Stadium: Ochsenhausen, Germany
| Challenger Series TT | 2025/06/12 15:00 | Dennis Klein v William Koehl | L | 3-0 |
| Challenger Series TT | 2024/07/29 13:00 | William Koehl v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2024/07/22 16:00 | Dennis Klein v William Koehl | L | 3-0 |
| Challenger Series TT | 2025/06/13 06:30 | Enio Mendes v William Koehl | L | 3-0 |
| Challenger Series TT | 2025/06/12 16:30 | Marius Henninger v William Koehl | L | 3-1 |
| Challenger Series TT | 2025/06/12 15:00 | Dennis Klein v William Koehl | L | 3-0 |
| Challenger Series TT | 2025/06/12 13:30 | William Koehl v Johannes Willeke | W | 3-1 |
| Challenger Series TT | 2025/06/12 11:30 | William Koehl v Daniel Rinderer | L | 1-3 |
| Challenger Series TT | 2025/06/12 10:00 | William Koehl v Oliver Both | W | 3-2 |
| Challenger Series TT | 2025/06/12 08:00 | Damian Zech v William Koehl | W | 0-3 |
| TT Star Series | 2025/06/07 12:30 | Benjamin Fruchart v William Koehl | L | 3-0 |
| Challenger Series TT | 2025/06/13 11:00 | Dennis Klein v Daniel Rinderer | W | 3-0 |
| Challenger Series TT | 2025/06/13 09:15 | Dennis Klein v Oliver Both | W | 3-1 |
| Challenger Series TT | 2025/06/13 08:00 | Dennis Klein v Johannes Willeke | W | 3-0 |
| Challenger Series TT | 2025/06/12 17:00 | Dennis Klein v Daniel Rinderer | W | 3-0 |
| Challenger Series TT | 2025/06/12 15:00 | Dennis Klein v William Koehl | W | 3-0 |
| Challenger Series TT | 2025/06/12 14:00 | Dennis Klein v Damian Zech | W | 3-1 |
| Challenger Series TT | 2025/06/12 10:30 | Dennis Klein v Marius Henninger | W | 3-0 |
| Challenger Series TT | 2025/06/12 08:30 | Dennis Klein v Enio Mendes | W | 3-0 |