| WTT Contender Lima XD | 2022/06/16 15:00 | Mittelham/Qiu v Gunduz/Altinkaya | W | 3-0 |
| WTT Star Contender Doha XD | 2022/03/29 14:40 | Mittelham/Qiu v Ionescu/Szocs | L | 1-3 |
| WTT Star Contender Doha XD | 2022/03/27 16:40 | Doo/Wong v Mittelham/Qiu | W | 1-3 |
| World Championship XD | 2021/11/25 15:30 | Lin/Zhang v Mittelham/Qiu | L | 3-1 |
| World Championship XD | 2021/11/23 21:20 | Polansky/Matelova v Mittelham/Qiu | W | 1-3 |
| WTT Contender Tunis XD | 2021/10/29 09:00 | Khanin/Trigolos v Mittelham/Qiu | L | 3-0 |
| WTT Contender Tunis XD | 2021/10/28 13:30 | Abid/Zoghlami v Mittelham/Qiu | W | 0-3 |
| European Championships XD | 2021/06/25 19:00 | Balazova/Pistej v Mittelham/Qiu | W | 0-3 |
| WTT Contender Lima XD | 2022/06/16 15:00 | Kallberg/Wan v Gonzalez/Diaz | W | 3-0 |