| Challenger - Ochsenhausen | 2021/03/31 07:10 | Liang Qiu v Sven Happek | L | 3-0 |
| Challenger - Ochsenhausen | 2021/02/24 10:10 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger - Ochsenhausen | 2021/01/28 08:50 | Sven Happek v Liang Qiu | W | 3-1 |
| Challenger - Ochsenhausen | 2020/12/02 10:50 | Sven Happek v Liang Qiu | L | 1-3 |
| Challenger - Ochsenhausen | 2020/11/18 13:30 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger - Ochsenhausen | 2020/10/07 07:10 | Liang Qiu v Sven Happek | L | 3-1 |
| Challenger - Ochsenhausen | 2020/07/20 07:50 | Liang Qiu v Sven Happek | W | 2-3 |
| Challenger - Ochsenhausen | 2020/07/14 08:20 | Sven Happek v Liang Qiu | L | 0-3 |
| Challenger - Ochsenhausen | 2021/07/16 11:40 | Sven Happek v Evgueni Chtchetinine | L | 1-3 |
| Challenger - Ochsenhausen | 2021/07/16 10:05 | Andrei Putuntica v Sven Happek | L | 3-0 |
| Challenger - Ochsenhausen | 2021/07/16 09:10 | Sven Happek v Andrei Putuntica | L | 0-3 |
| Challenger - Ochsenhausen | 2021/07/16 07:10 | Sven Happek v Alexander Valuch | L | 1-3 |
| Challenger - Ochsenhausen | 2021/07/15 10:30 | Sven Happek v Evgueni Chtchetinine | L | 2-3 |
| Challenger - Ochsenhausen | 2021/07/14 11:50 | Sven Happek v Josip Huzjak | W | 3-1 |
| Challenger - Ochsenhausen | 2021/07/14 09:10 | Sven Happek v Dauud Cheaib | L | 2-3 |
| Challenger - Ochsenhausen | 2021/07/14 06:30 | Sven Happek v Dennis Klein | W | 3-2 |
| Challenger - Ochsenhausen | 2021/09/07 09:00 | Carlos Franco v Liang Qiu | W | 1-3 |
| Challenger - Ochsenhausen | 2021/09/07 07:00 | Tom Jarvis v Liang Qiu | L | 3-1 |
| Challenger - Ochsenhausen | 2021/09/06 18:40 | Amirreza Abbasi v Liang Qiu | L | 3-1 |
| Challenger - Ochsenhausen | 2021/09/06 16:40 | Liang Qiu v Josip Huzjak | L | 1-3 |
| Challenger - Ochsenhausen | 2021/09/06 14:00 | Liang Qiu v Andrey Semenov | W | 3-2 |
| Challenger - Ochsenhausen | 2021/09/06 11:10 | Liang Qiu v Amin Ahmadian | W | 3-2 |
| Challenger - Ochsenhausen | 2021/09/06 08:30 | Florian Bluhm v Liang Qiu | L | 3-2 |
| Challenger - Ochsenhausen | 2021/09/03 11:30 | Liang Qiu v Rafael Turrini | L | 1-3 |