| Challenger Series TT | 2023/04/03 07:10 | Dennis Klein v Amirreza Abbasi | W | 3-2 |
| Challenger Series TT | 2022/09/02 13:30 | Dennis Klein v Amirreza Abbasi | W | 3-1 |
| Challenger Series TT | 2022/09/01 16:30 | Dennis Klein v Amirreza Abbasi | W | 3-1 |
| Challenger Ochsenhausen | 2022/06/24 13:05 | Amirreza Abbasi v Dennis Klein | W | 1-3 |
| Challenger Ochsenhausen | 2022/06/23 11:50 | Dennis Klein v Amirreza Abbasi | L | 1-3 |
| Challenger Series TT | 2022/06/17 12:50 | Dennis Klein v Amirreza Abbasi | L | 2-3 |
| 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 Series TT | 2023/04/04 10:05 | Dennis Klein v Kirill Fadeev | W | 3-0 |
| Challenger Series TT | 2023/04/04 09:10 | Dennis Klein v Emiliano Riofrio | W | 3-0 |
| Challenger Series TT | 2023/04/04 07:10 | Dennis Klein v Dauud Cheaib | W | 3-0 |
| Challenger Series TT | 2023/04/03 17:50 | Dennis Klein v Florian Bourrassaud | L | 2-3 |
| Challenger Series TT | 2023/04/03 14:30 | Dennis Klein v Kirill Fadeev | W | 3-2 |
| Challenger Series TT | 2023/04/03 12:30 | Dennis Klein v Sven Happek | W | 3-1 |
| Challenger Series TT | 2023/04/03 09:10 | Pekka Pelz v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/04/03 07:10 | Dennis Klein v Amirreza Abbasi | W | 3-2 |
| Challenger Series TT | 2023/04/04 10:45 | Amirreza Abbasi v Florian Bourrassaud | W | 3-2 |
| Challenger Series TT | 2023/04/04 08:30 | Pekka Pelz v Amirreza Abbasi | W | 0-3 |
| Challenger Series TT | 2023/04/03 17:10 | Emiliano Riofrio v Amirreza Abbasi | W | 0-3 |
| Challenger Series TT | 2023/04/03 15:10 | Dauud Cheaib v Amirreza Abbasi | W | 2-3 |
| Challenger Series TT | 2023/04/03 13:50 | Florian Bourrassaud v Amirreza Abbasi | W | 0-3 |
| Challenger Series TT | 2023/04/03 09:50 | Kirill Fadeev v Amirreza Abbasi | W | 2-3 |
| Challenger Series TT | 2023/04/03 07:10 | Dennis Klein v Amirreza Abbasi | L | 3-2 |
| TT Star Series | 2023/03/30 13:04 | Amin Ahmadian v Amirreza Abbasi | L | 3-2 |