| 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 |
| Bulgarian International | 2019/10/06 08:00 | Joonas Korhonen v Dimitar Yanakiev | L | 0-2 |
| Bulgarian International | 2019/10/05 13:30 | Joonas Korhonen v Albin Carl Hjelm | W | 2-1 |
| Bulgarian International | 2019/10/05 07:30 | Peyo Boichinov v Joonas Korhonen | W | 1-2 |
| Bulgarian International | 2019/10/04 13:00 | Joonas Korhonen v Giovanni Toti | W | 2-0 |
| Estonian International - Kvalifikation | 2020/01/09 07:00 | Jacob Schueler v Martin Ouazzen | L | 0-2 |
| Welsh International - Kvalifikation | 2019/11/28 09:00 | Wolfgang Gnedt v Jacob Schueler | L | 2-0 |
| Welsh International - Kvalifikation | 2019/11/27 15:30 | Jacob Schueler v Neil Bhabuta | W | 2-1 |
| Welsh International - Kvalifikation | 2019/11/27 12:30 | Jacob Schueler v Ricoveer Shergill | W | 2-0 |
| Sudirman Cup | 2019/05/22 04:00 | Nhat Nguyen v Jacob Schueler | L | 2-0 |
| Sudirman Cup | 2019/05/19 11:00 | Jacob Schueler v Abhinav Manota | L | 0-2 |
| Indonesia Masters - Mixdouble | 2018/05/22 13:00 | Lucas Corvee v Jacob Schueler | L | 2-0 |
| Indonesia Masters - Mixdouble | 2018/05/21 13:00 | Sai Praneeth B. v Jacob Schueler | L | 2-0 |