| 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 Ochsenhausen | 2021/09/29 06:30 | Sven Happek v Liang Qiu | L | 0-3 |
| 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 Series TT | 2022/09/19 08:30 | Tal Israeli v Sven Happek | L | 3-2 |
| Challenger Series TT | 2022/09/13 09:10 | Stephane Ouaiche v Sven Happek | L | 3-0 |
| Challenger Series TT | 2022/09/13 07:10 | Sven Happek v Kirill Fadeev | W | 3-0 |
| Challenger Series TT | 2022/09/12 19:10 | Tal Israeli v Sven Happek | L | 3-0 |
| Challenger Series TT | 2022/09/12 16:30 | Marius Henninger v Sven Happek | L | 3-1 |
| Challenger Series TT | 2022/09/12 13:50 | Sven Happek v Albert Vilardell | L | 1-3 |
| Challenger Series TT | 2022/09/12 10:30 | Sven Happek v Kenan Hrnic | L | 2-3 |
| Challenger Series TT | 2022/09/12 08:30 | Sven Happek v Samuel Amann | L | 1-3 |
| Challenger Series TT | 2022/09/19 06:30 | Michael Trink v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2022/07/29 12:50 | Liang Qiu v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2022/07/29 11:25 | Mohammadali Rouintanesfahani v Liang Qiu | L | 3-0 |
| Challenger Series TT | 2022/07/29 09:10 | Liang Qiu v Kenan Hrnic | W | 3-1 |
| Challenger Ochsenhausen | 2022/07/28 19:50 | Liang Qiu v Elia Schmid | L | 2-3 |
| Challenger Ochsenhausen | 2022/07/28 17:10 | Liang Qiu v Dennis Klein | L | 0-3 |
| Challenger Ochsenhausen | 2022/07/28 14:30 | Mohammadali Rouintanesfahani v Liang Qiu | L | 3-1 |
| Challenger Ochsenhausen | 2022/07/28 11:50 | Kirill Fadeev v Liang Qiu | W | 0-3 |