| Challenger Series TT | 2022/08/02 12:05 | Dennis Klein v Carlos Muhlbach | W | 3-0 |
| Challenger Series TT | 2022/08/01 07:10 | Carlos Muhlbach v Dennis Klein | W | 2-3 |
| Challenger Ochsenhausen | 2021/06/11 13:30 | Carlos Muhlbach v Dennis Klein | L | 3-2 |
| Challenger Ochsenhausen | 2021/06/09 09:50 | Dennis Klein v Carlos Muhlbach | W | 3-2 |
| Challenger Ochsenhausen | 2021/04/07 09:50 | Carlos Muhlbach v Dennis Klein | W | 1-3 |