| Latvia International | 2021/08/27 11:20 | Joel Koenig v Joonas Korhonen | W | 0-2 |
| Swedish Open - Kvalifikation | 2020/01/16 17:45 | Jakob Godt v Joonas Korhonen | L | 2-1 |
| Swedish Open - Kvalifikation | 2020/01/16 14:30 | Joonas Korhonen v Rasmus Kæseler | W | 2-1 |
| Swedish Open - Kvalifikation | 2020/01/16 09:00 | Joonas Korhonen v Jacob Schueler | W | 2-1 |
| Estonian International - Kvalifikation | 2020/01/09 11:00 | Simon Sandholm v Joonas Korhonen | L | 2-0 |
| Slovenien - Future Series | 2019/11/22 10:45 | Joonas Korhonen v Gergo Pytel | W | 2-0 |
| Norwegian International | 2019/11/08 10:30 | Joakim Oldorff v Joonas Korhonen | L | 2-0 |
| SaarLorLux Open | 2019/10/29 19:00 | Yee Han Chong v Joonas Korhonen | L | 2-0 |
| Latvia International | 2021/08/27 12:30 | Nicolas A. Mueller v Valentin Singer | W | 2-1 |
| Denmark Masters - Kvalifikation | 2021/08/05 14:00 | Elias Bracke v Nicolas A. Mueller | L | 2-0 |
| Spain International - Kvalifikation | 2021/06/16 11:00 | Nicolas A. Mueller v Jonas Jaeger | L | 0-2 |
| Spain International - Kvalifikation | 2021/06/16 10:40 | Nicolas A. Mueller v Adrian Alvarez | W | 2-0 |
| Lithuanian International | 2021/06/12 15:45 | Nicolas A. Mueller v Alex Lanier | L | 0-2 |
| Lithuanian International | 2021/06/12 06:45 | Nicolas A. Mueller v Axel Henrik Parkhøi | W | 2-0 |
| Lithuanian International | 2021/06/11 09:00 | Luka Ban v Nicolas A. Mueller | W | 1-2 |
| Austrian Open - Kvalifikation | 2021/05/27 10:15 | Nicolas A. Mueller v Mohamad Razif Fazriq | L | 1-2 |