| Challenger Series TT | 2023/09/18 06:30 | Sven Happek v Liang Qiu | W | 2-3 |
| Challenger Series TT | 2023/06/27 08:30 | Sven Happek v Liang Qiu | W | 0-3 |
| Challenger Series TT | 2023/06/15 07:10 | Sven Happek v Liang Qiu | W | 2-3 |
| Challenger Series TT | 2022/12/19 16:10 | Sven Happek v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2022/10/10 15:10 | Liang Qiu v Sven Happek | L | 1-3 |
| Challenger Series TT | 2022/09/19 11:10 | Sven Happek v Liang Qiu | W | 0-3 |
| Challenger de Ochsenhausen | 2022/01/20 15:30 | Liang Qiu v Sven Happek | W | 3-1 |
| Challenger de Ochsenhausen | 2021/12/01 10:10 | Sven Happek v Liang Qiu | W | 0-3 |
| Challenger Series TT | 2023/10/09 09:10 | Liang Qiu v Mike Hollo | L | 2-3 |
| Challenger Series TT | 2023/10/09 06:30 | Liang Qiu v Dauud Cheaib | L | 0-3 |
| Challenger Series TT | 2023/10/03 09:50 | Liang Qiu v Guillaume Alcayde | L | 1-3 |
| Challenger Series TT | 2023/10/03 06:30 | Liang Qiu v Sudhanshu Grover | L | 0-3 |
| Challenger Series TT | 2023/10/02 17:50 | Liang Qiu v Akos Kishegyi | L | 1-3 |
| Challenger Series TT | 2023/10/02 16:30 | Liang Qiu v Louis Price | W | 3-1 |
| Challenger Series TT | 2023/10/02 11:50 | Liang Qiu v Sushmit Sriram | L | 1-3 |
| Challenger Series TT | 2023/10/02 09:10 | Liang Qiu v Akito Itagaki | W | 3-0 |
| Challenger Series TT | 2023/10/09 09:50 | Sven Happek v Alexander Valuch | L | 0-3 |
| Challenger Series TT | 2023/10/09 07:50 | Sven Happek v Rafael Turrini | L | 0-3 |
| Challenger Series TT | 2023/10/06 10:30 | Sven Happek v Guillaume Alcayde | L | 1-3 |
| Challenger Series TT | 2023/10/06 07:50 | Sven Happek v Miguel Nunez | W | 3-2 |
| Challenger Series TT | 2023/10/05 19:10 | Sven Happek v Sushmit Sriram | L | 0-3 |
| Challenger Series TT | 2023/10/05 14:30 | Sven Happek v Akito Itagaki | L | 2-3 |
| Challenger Series TT | 2023/10/05 12:30 | Sven Happek v Hannes Hormann | W | 3-1 |
| Challenger Series TT | 2023/10/05 09:10 | Daniel Rinderer v Sven Happek | L | 3-1 |