| Norwegian Int. Qual | 2023/11/09 09:40 | Mads Emil Monke v Joonas Korhonen | L | 2-1 |
| Czech Open | 2023/10/20 08:10 | Joonas Korhonen v Viktor Ording Kauffman | L | 0-2 |
| Polish Int. | 2023/09/22 09:40 | Joonas Korhonen v Cholan Kayan | L | 1-2 |
| Latvia Int. | 2023/09/01 09:40 | Sacha Leveque v Joonas Korhonen | L | 2-0 |
| Swedish Open Qual | 2023/05/11 07:20 | Joonas Korhonen v Larry Pong | L | 1-2 |
| Dutch Int. Qual | 2023/04/13 11:50 | Ivan Rusev v Joonas Korhonen | L | 2-0 |
| Dutch Int. Qual | 2023/04/13 11:10 | Charlie Castle v Joonas Korhonen | W | 0-2 |
| Polish Open Qual | 2023/03/22 10:20 | Martin Ouazzen v Joonas Korhonen | L | 2-0 |