| 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 Series TT | 2023/04/04 12:10 | Dennis Klein v Amirreza Abbasi | W | 3-2 |
| 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 | 2023/03/21 13:50 | Rafael Turrini v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2023/03/21 13:05 | Dauud Cheaib v Liang Qiu | L | 3-2 |
| Challenger Series TT | 2023/03/21 09:30 | Amirreza Abbasi v Liang Qiu | L | 3-1 |
| Challenger Series TT | 2023/03/21 08:10 | Laszlo Magyar v Liang Qiu | W | 2-3 |
| Challenger Series TT | 2023/03/20 18:10 | Dauud Cheaib v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2023/03/20 16:10 | Rafael Turrini v Liang Qiu | W | 0-3 |
| Challenger Series TT | 2023/03/20 13:30 | Marius Henninger v Liang Qiu | W | 0-3 |
| Challenger Series TT | 2023/03/20 12:10 | Siddharta Almeida v Liang Qiu | W | 1-3 |