| Challenger Series TT | 2022/06/17 07:10 | Amirreza Abbasi v Dennis Klein | W | 1-3 |
| Challenger - Ochsenhausen | 2022/03/21 14:50 | Amirreza Abbasi v Dennis Klein | L | 3-1 |
| Challenger - Ochsenhausen | 2021/11/02 12:30 | Dennis Klein v Amirreza Abbasi | L | 0-3 |
| Challenger - Ochsenhausen | 2021/10/11 15:20 | Dennis Klein v Amirreza Abbasi | L | 2-3 |
| Challenger - Ochsenhausen | 2021/08/31 12:35 | Dennis Klein v Amirreza Abbasi | W | 3-2 |
| Challenger - Ochsenhausen | 2021/08/31 11:00 | Dennis Klein v Amirreza Abbasi | W | 3-0 |