| 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 |
| European Championships XD | 2021/06/25 10:15 | Mittelham/Qiu v Lebesson/Yuan | W | 3-2 |
| European Championships XD | 2021/06/24 11:15 | Mittelham/Qiu v Yigenler/Yilmaz | W | 3-0 |
| European Championships XD | 2021/06/24 07:30 | Ionescu/Szocs v Mittelham/Qiu | W | 2-3 |
| World Championship XD | 2021/11/27 17:00 | Robles/Xiao v Sun/Wang | L | 1-3 |
| World Championship XD | 2021/11/26 20:00 | Ionescu/Szocs v Robles/Xiao | W | 1-3 |
| World Championship XD | 2021/11/25 15:30 | Lambiet/Marchetti v Robles/Xiao | W | 0-3 |
| World Championship XD | 2021/11/23 21:20 | Madrid/Silva v Robles/Xiao | W | 1-3 |
| WTT Contender Novo Mesto XD | 2021/11/11 13:00 | Robles/Xiao v Wang/Wang | L | 0-3 |
| WTT Contender Tunis XD | 2021/10/28 19:30 | Robles/Xiao v Khanin/Trigolos | L | 0-3 |
| WTT Contender Tunis XD | 2021/10/27 18:00 | Piccolin/Stoyanov v Robles/Xiao | W | 0-3 |
| WTT Star Contender Doha XD | 2021/03/08 16:20 | Robles/Xiao v Cheng/Lin | L | 1-3 |