| Challenger Series TT | 2023/10/09 11:50 | Liang Qiu v Sven Happek | W | 3-0 |
| 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 Ochsenhausen | 2022/01/20 15:30 | Liang Qiu v Sven Happek | W | 3-1 |
| Challenger Series TT | 2023/11/13 19:30 | Liang Qiu v Martin Baechler | W | 3-0 |
| Challenger Series TT | 2023/11/13 16:50 | Dauud Cheaib v Liang Qiu | L | 3-2 |
| Challenger Series TT | 2023/11/13 14:50 | Liang Qiu v Vidit Desai | W | 3-1 |
| Challenger Series TT | 2023/11/13 10:50 | Liang Qiu v Akito Itagaki | W | 3-0 |
| Challenger Series TT | 2023/11/13 08:10 | Liang Qiu v Alexander Valuch | W | 3-1 |
| Challenger Series TT | 2023/10/10 09:50 | Liang Qiu v Alexander Valuch | L | 2-3 |
| Challenger Series TT | 2023/10/10 06:30 | Liang Qiu v Rafael Turrini | L | 0-3 |
| Challenger Series TT | 2023/10/09 17:50 | Liang Qiu v Admir Duranspahic | L | 1-3 |
| Challenger Series TT | 2023/11/14 08:10 | Vidit Desai v Sven Happek | W | 0-3 |
| Challenger Series TT | 2023/11/13 18:10 | Akito Itagaki v Sven Happek | L | 3-2 |
| Challenger Series TT | 2023/11/13 16:10 | Martin Baechler v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/11/13 13:30 | Alexander Valuch v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/11/13 12:10 | Dauud Cheaib v Sven Happek | L | 3-1 |
| Challenger Series TT | 2023/11/13 07:30 | Dennis Klein v Sven Happek | L | 3-0 |
| Challenger Series TT | 2023/10/10 09:10 | Sven Happek v Armin Alicic | L | 0-3 |
| Challenger Series TT | 2023/10/09 19:50 | Sven Happek v Admir Duranspahic | L | 0-3 |