Stadium: Ochsenhausen, Germany
| 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 | 2024/12/13 08:30 | Tobias Saltzer v William Koehl | L | 3-1 |
| Challenger Series TT | 2024/12/12 18:30 | William Koehl v Boris Brnovic | W | 3-0 |
| Challenger Series TT | 2024/12/12 17:00 | Mike Hollo v William Koehl | W | 2-3 |
| Challenger Series TT | 2024/12/12 15:00 | Damian Zech v William Koehl | L | 3-1 |
| Challenger Series TT | 2024/12/12 13:00 | William Koehl v Francesco Maragioglio | W | 3-0 |
| Challenger Series TT | 2024/12/12 10:30 | William Koehl v Humberto Manhani | L | 0-3 |
| Challenger Series TT | 2024/12/12 09:00 | William Koehl v Jeromy Loffler | L | 1-3 |
| Challenger Series TT | 2024/11/26 09:30 | Tom Colvin v William Koehl | W | 0-3 |
| Challenger Series TT | 2025/03/25 12:00 | Florian Bluhm v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2025/03/25 10:45 | Chia-An Yang v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2025/03/25 09:30 | Jing-You Peng v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2025/03/24 18:00 | Ting-Wei Liang v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2025/03/24 16:30 | Dennis Klein v Jaime Lama | W | 3-0 |
| Challenger Series TT | 2025/03/24 14:00 | Dennis Klein v Chia-An Yang | L | 1-3 |
| Challenger Series TT | 2025/03/24 12:30 | Xavier Dixon v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2025/03/24 10:30 | Florian Bluhm v Dennis Klein | W | 0-3 |