| Portugal Int. | 2022/03/11 15:00 | Alex Lanier v Joonas Korhonen | L | 2-0 |
| Swedish Open | 2022/01/21 11:40 | Korakrit Laotrakul v Joonas Korhonen | L | 2-0 |
| Swedish Open | 2022/01/21 09:40 | Albin Carl Hjelm v Joonas Korhonen | W | 0-2 |
| Estonian Int. | 2022/01/14 11:40 | Joonas Korhonen v Harshit Aggarwal | L | 1-2 |
| Estonian Int. | 2022/01/14 09:10 | Duarte Nuno Anjo v Joonas Korhonen | W | 0-2 |
| Italian Int. | 2021/12/17 09:20 | Samuel Hsiao v Joonas Korhonen | L | 2-1 |
| Irish Open | 2021/11/18 10:00 | Joonas Korhonen v Arnaud Merkle | L | 0-2 |
| Hungarian Int. | 2021/11/04 12:20 | Joonas Korhonen v Sathish Kumar Karunakaran | L | 0-2 |