| Challenger Series TT | 2023/07/06 17:10 | Dennis Klein v Liang Qiu | W | 3-1 |
| Challenger Series TT | 2022/07/29 12:50 | Liang Qiu v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2022/07/28 17:10 | Liang Qiu v Dennis Klein | W | 0-3 |
| Challenger Ochsenhausen | 2021/12/03 12:25 | Dennis Klein v Liang Qiu | W | 3-2 |
| Challenger Ochsenhausen | 2021/12/02 08:10 | Liang Qiu v Dennis Klein | W | 2-3 |
| Challenger Ochsenhausen | 2021/11/01 07:30 | Dennis Klein v Liang Qiu | W | 3-2 |
| Challenger Ochsenhausen | 2021/06/28 06:30 | Liang Qiu v Dennis Klein | W | 2-3 |
| Challenger Ochsenhausen | 2021/02/25 08:10 | Liang Qiu v Dennis Klein | L | 3-0 |
| Challenger Ochsenhausen | 2021/02/22 13:30 | Dennis Klein v Liang Qiu | L | 1-3 |
| Challenger Ochsenhausen | 2021/01/27 13:30 | Dennis Klein v Liang Qiu | L | 2-3 |
| Challenger Ochsenhausen | 2021/01/25 12:50 | Liang Qiu v Dennis Klein | W | 1-3 |