| Malaysia Masters 2020, MS, Qualification | 2022/07/05 02:00 | Weng, H. Y. v Kai Schaefer | L | 2-0 |
| Singapore Open 2019, MS, Qualification | 2022/07/12 01:20 | Kai Schaefer v Kalle Koljonen | W | 2-0 |
| Malaysia Masters 2020, MS, Qualification | 2022/07/05 02:00 | Weng, H. Y. v Kai Schaefer | L | 2-0 |
| Nantes Int. | 2022/06/24 07:00 | Yeoh, Seng Zoe v Kai Schaefer | L | 2-0 |
| Open de Thaïlande | 2022/05/19 07:40 | Kai Schaefer v Zii Jia Lee | L | 0-2 |
| Open de Thaïlande | 2022/05/18 10:00 | Rouxel, Thomas v Kai Schaefer | W | 0-2 |
| Thomas Cup | 2022/05/11 07:40 | Kai Schaefer v Ho-Shue, Jason Anthony | W | 2-0 |
| Thomas Cup | 2022/05/09 07:40 | Tzu Wei Wang v Kai Schaefer | L | 2-1 |
| Thomas Cup | 2022/05/08 02:40 | Srikanth Kidambi v Kai Schaefer | L | 2-1 |
| Singapore Open 2019, MS, Qualification | 2022/07/12 01:00 | Weng, H. Y. v Sun, F. | W | 2-0 |
| Malaysia Masters 2020, MS, Qualification | 2022/07/05 06:20 | Jun Hao Leong v Weng, H. Y. | L | 2-1 |
| Malaysia Masters 2020, MS, Qualification | 2022/07/05 02:00 | Weng, H. Y. v Kai Schaefer | W | 2-0 |
| Indonesia Masters | 2022/06/08 07:40 | Ka Long Angus NG v Weng, H. Y. | L | 2-0 |
| Thomas Cup | 2022/05/11 13:20 | Hans-Kristian Vittinghus v Weng, H. Y. | L | 2-1 |
| Thomas Cup | 2022/05/10 08:00 | Weng, H. Y. v Adel Hamek | W | 2-0 |
| Asia Championships | 2022/04/30 06:20 | Zii Jia Lee v Weng, H. Y. | L | 2-0 |
| Asia Championships | 2022/04/29 09:40 | Weng, H. Y. v Anthony Sinisuka Ginting | W | 2-1 |