| Slovak Open | 2022/03/04 09:50 | Jiri Kral v Karl Kert | L | 2-0 |
| Swedish Open Qual | 2022/01/20 16:40 | Dominik Kwinta v Karl Kert | L | 2-0 |
| Swedish Open Qual | 2022/01/20 12:40 | Karl Kert v Mikolaj Szymanowski | W | 2-1 |
| Swedish Open Qual | 2022/01/20 09:40 | Karl Kert v Adrien Slegers | W | 2-0 |
| Estonian Int. | 2022/01/14 11:40 | Karl Kert v Niluka Karunaratne | L | 0-2 |
| Polish Int. Qual | 2021/09/23 13:20 | Tarun Reddy Katam v Karl Kert | L | 2-0 |
| Polish Int. Qual | 2021/09/23 12:00 | Gal Bizjak v Karl Kert | W | 0-2 |
| Latvia Int. | 2021/08/27 11:00 | Bernardo Atilano v Karl Kert | L | 2-0 |