| Challenger Series TT | 2023/07/03 11:50 | Kirill Fadeev v Dennis Klein | W | 3-1 |
| Challenger Series TT | 2023/05/05 11:25 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/05/04 17:10 | Dennis Klein v Kirill Fadeev | L | 3-1 |
| Challenger Series TT | 2023/05/02 11:25 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/05/01 09:10 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/04/06 14:30 | Kirill Fadeev v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2023/04/04 10:05 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2023/04/03 14:30 | Dennis Klein v Kirill Fadeev | L | 3-2 |
| Challenger Series TT | 2023/03/27 11:50 | Kirill Fadeev v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2023/02/06 07:30 | Kirill Fadeev v Dennis Klein | W | 3-1 |
| Challenger Series TT | 2023/02/02 07:30 | Dennis Klein v Kirill Fadeev | L | 3-1 |
| Challenger Series TT | 2022/10/31 18:10 | Kirill Fadeev v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2022/09/29 06:30 | Dennis Klein v Kirill Fadeev | L | 3-1 |
| Challenger Series TT | 2022/09/05 07:10 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Ochsenhausen | 2022/07/28 06:30 | Kirill Fadeev v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2022/07/12 11:25 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Series TT | 2022/07/11 06:30 | Kirill Fadeev v Dennis Klein | L | 2-3 |
| Challenger Ochsenhausen | 2022/06/21 13:30 | Dennis Klein v Kirill Fadeev | L | 3-1 |
| Challenger Ochsenhausen | 2022/06/20 18:30 | Dennis Klein v Kirill Fadeev | L | 3-2 |
| Challenger Series TT | 2022/06/16 12:30 | Kirill Fadeev v Dennis Klein | W | 3-0 |
| Challenger Ochsenhausen | 2022/05/12 07:10 | Dennis Klein v Kirill Fadeev | L | 3-0 |
| Challenger Ochsenhausen | 2022/03/24 07:30 | Dennis Klein v Kirill Fadeev | L | 3-2 |