Estadio: Ochsenhausen, Germany
| Challenger Series TT | 2023/04/06 14:30 | Kirill Fadeev v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/04/04 10:05 | Dennis Klein v Kirill Fadeev | W | 3-0 |
| Challenger Series TT | 2023/04/03 14:30 | Dennis Klein v Kirill Fadeev | W | 3-2 |
| Challenger Series TT | 2023/03/27 11:50 | Kirill Fadeev v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/02/06 07:30 | Kirill Fadeev v Dennis Klein | L | 3-1 |
| Challenger Series TT | 2023/02/02 07:30 | Dennis Klein v Kirill Fadeev | W | 3-1 |
| Challenger Series TT | 2022/10/31 18:10 | Kirill Fadeev v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2022/09/29 06:30 | Dennis Klein v Kirill Fadeev | W | 3-1 |
| Challenger Series TT | 2023/05/01 06:30 | Dennis Klein v Michael Engelhardt | W | 3-0 |
| Challenger Series TT | 2023/04/07 12:50 | Yannick Vostes v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/04/07 12:05 | Florian Bourrassaud v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/04/07 09:10 | Dennis Klein v Yannick Vostes | W | 3-0 |
| Challenger Series TT | 2023/04/06 19:50 | Dennis Klein v Florian Bourrassaud | L | 2-3 |
| Challenger Series TT | 2023/04/06 17:10 | Dennis Klein v Makoto Nogami | W | 3-1 |
| Challenger Series TT | 2023/04/06 14:30 | Kirill Fadeev v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2023/04/06 11:50 | Damian Zech v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/05/01 07:10 | Kirill Fadeev v Benjamin Fruchart | L | 1-3 |
| Challenger Series TT | 2023/04/24 19:10 | Kirill Fadeev v Alvaro Gainza | L | 0-3 |
| Challenger Series TT | 2023/04/24 14:30 | Kirill Fadeev v Sven Happek | L | 0-3 |
| Challenger Series TT | 2023/04/24 12:30 | Kirill Fadeev v Max Klink | W | 3-1 |
| Challenger Series TT | 2023/04/24 09:10 | Tobias Slanina v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/04/24 07:10 | Kirill Fadeev v Anton Limonov | L | 0-3 |
| Challenger Series TT | 2023/04/07 10:30 | Kirill Fadeev v Yonghun Lee | W | 3-1 |
| Challenger Series TT | 2023/04/07 07:50 | Kirill Fadeev v Florian Bourrassaud | L | 0-3 |