| Challenger Series TT | 2022/06/17 07:10 | Amirreza Abbasi v Dennis Klein | W | 1-3 |
| Challenger de Ochsenhausen | 2022/03/21 14:50 | Amirreza Abbasi v Dennis Klein | L | 3-1 |
| Challenger de Ochsenhausen | 2021/11/02 12:30 | Dennis Klein v Amirreza Abbasi | L | 0-3 |
| Challenger de Ochsenhausen | 2021/10/11 15:20 | Dennis Klein v Amirreza Abbasi | L | 2-3 |
| Challenger de Ochsenhausen | 2021/08/31 12:35 | Dennis Klein v Amirreza Abbasi | W | 3-2 |
| Challenger de Ochsenhausen | 2021/08/31 11:00 | Dennis Klein v Amirreza Abbasi | W | 3-0 |
| Challenger Series TT | 2022/06/17 10:45 | Simon Berglund v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2022/06/17 08:30 | Mohammadali Rouintanesfahani v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2022/06/17 07:10 | Amirreza Abbasi v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2022/06/16 17:10 | Sudhanshu Grover v Dennis Klein | L | 3-2 |
| Challenger Series TT | 2022/06/16 15:10 | Simon Berglund v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2022/06/16 12:30 | Kirill Fadeev v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2022/06/16 11:10 | Elia Schmid v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2022/06/16 06:30 | Michael Engelhardt v Dennis Klein | W | 1-3 |
| Challenger Series TT | 2022/06/17 11:25 | Amirreza Abbasi v Kirill Fadeev | W | 3-2 |
| Challenger Series TT | 2022/06/17 09:10 | Sudhanshu Grover v Amirreza Abbasi | W | 0-3 |
| Challenger Series TT | 2022/06/17 07:10 | Amirreza Abbasi v Dennis Klein | L | 1-3 |
| Challenger Series TT | 2022/06/16 19:10 | Kirill Fadeev v Amirreza Abbasi | W | 0-3 |
| Challenger Series TT | 2022/06/16 16:30 | Michael Engelhardt v Amirreza Abbasi | W | 0-3 |
| Challenger Series TT | 2022/06/16 13:50 | Amirreza Abbasi v Mohammadali Rouintanesfahani | W | 3-1 |
| Challenger Series TT | 2022/06/16 10:30 | Amirreza Abbasi v Simon Berglund | L | 1-3 |
| Challenger Series TT | 2022/06/16 08:30 | Amirreza Abbasi v Elia Schmid | W | 3-0 |