| Challenger Series TT | 2022/11/01 08:10 | Arman Hajiei v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2022/11/01 10:10 | Kirill Fadeev v Arman Hajiei | L | 3-2 |
| Challenger Series TT | 2022/11/01 08:10 | Arman Hajiei v Dennis Klein | L | 0-3 |
| Challenger Series TT | 2022/10/31 20:10 | Mathias Hubgen v Arman Hajiei | L | 3-1 |
| Challenger Series TT | 2022/10/31 17:30 | Marius Henninger v Arman Hajiei | W | 1-3 |
| Challenger Series TT | 2022/10/31 14:50 | Arman Hajiei v Mohammadali Rouintanesfahani | L | 2-3 |
| Challenger Series TT | 2022/10/31 11:30 | Arman Hajiei v Josip Huzjak | L | 0-3 |
| Challenger Series TT | 2022/10/31 09:30 | Arman Hajiei v Dillon Chambers | W | 3-0 |
| TT Star Series | 2022/09/10 10:45 | Bohuslav Koszyk v Arman Hajiei | W | 1-3 |
| Challenger Series TT | 2023/01/10 13:50 | Dennis Klein v Yannick Vostes | W | 3-0 |
| Challenger Series TT | 2023/01/10 12:25 | Yongyin Li v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/01/10 11:30 | Yongyin Li v Dennis Klein | L | 3-0 |
| Challenger Series TT | 2023/01/10 07:30 | Yannick Vostes v Dennis Klein | L | 3-2 |
| Challenger Series TT | 2023/01/09 19:30 | Dennis Klein v Jean Rassouw | W | 3-0 |
| Challenger Series TT | 2023/01/09 16:10 | Dennis Klein v Dauud Cheaib | W | 3-1 |
| Challenger Series TT | 2023/01/09 14:10 | Sven Happek v Dennis Klein | W | 0-3 |
| Challenger Series TT | 2023/01/09 11:30 | Daniel Rinderer v Dennis Klein | L | 3-2 |