| Challenger Series TT | 2023/06/15 07:10 | Sven Happek v Liang Qiu | L | 2-3 |
| Challenger Series TT | 2022/12/19 16:10 | Sven Happek v Liang Qiu | W | 3-0 |
| Challenger Series TT | 2022/10/10 15:10 | Liang Qiu v Sven Happek | W | 1-3 |
| Challenger Series TT | 2022/09/19 11:10 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger Ochsenhausen | 2022/01/20 15:30 | Liang Qiu v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2021/12/01 10:10 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger Ochsenhausen | 2021/11/10 07:30 | Liang Qiu v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2021/10/27 06:30 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger Series TT | 2023/06/26 18:30 | Benjamin Fruchart v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/06/26 15:50 | Antonin Gavlas v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/06/26 13:50 | Carlo Rossi v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/06/26 09:50 | Damian Zech v Sven Happek | W | 2-3 |
| Challenger Series TT | 2023/06/26 07:10 | Makoto Nogami v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/06/23 09:10 | Sven Happek v Carlo Rossi | L | 2-3 |
| Challenger Series TT | 2023/06/22 19:50 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/06/22 17:10 | Sven Happek v Johannes Willeke | L | 2-3 |
| Challenger Series TT | 2023/06/27 07:10 | Carlo Rossi v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2023/06/26 17:10 | Damian Zech v Liang Qiu | W | 0-3 |
| Challenger Series TT | 2023/06/26 15:10 | Benjamin Fruchart v Liang Qiu | L | 3-2 |
| Challenger Series TT | 2023/06/26 12:30 | Makoto Nogami v Liang Qiu | W | 1-3 |
| Challenger Series TT | 2023/06/26 11:10 | Antonin Gavlas v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2023/06/26 06:30 | Marius Henninger v Liang Qiu | W | 2-3 |
| Challenger Series TT | 2023/06/16 12:10 | Liang Qiu v Enio Mendes | L | 0-3 |
| Challenger Series TT | 2023/06/16 10:05 | Yannick Vostes v Liang Qiu | W | 2-3 |