Estadio: Ochsenhausen, Germany
| Challenger Series TT | 2023/12/11 10:10 | Dennis Klein v Alexander Valuch | L | 3-0 |
| Challenger Series TT | 2023/11/13 10:10 | Dennis Klein v Alexander Valuch | L | 3-0 |
| Challenger de Ochsenhausen | 2021/12/01 10:50 | Dennis Klein v Alexander Valuch | L | 3-1 |
| Challenger de Ochsenhausen | 2021/10/11 09:10 | Alexander Valuch v Dennis Klein | W | 3-1 |
| Challenger de Ochsenhausen | 2021/07/15 07:50 | Alexander Valuch v Dennis Klein | L | 2-3 |
| Challenger de Ochsenhausen | 2021/06/29 08:20 | Alexander Valuch v Dennis Klein | L | 0-3 |