| Austrian Open - Kval | 2023/05/25 11:05 | Nicolas A. Mueller v Eogene Ewe | L | 0-2 |
| Swedish Open - Kval | 2023/05/11 19:15 | Panji Ahmad Maulana v Nicolas A. Mueller | L | 2-0 |
| Swedish Open - Kval | 2023/05/11 15:45 | Nicolas A. Mueller v Albin Carl Hjelm | W | 2-0 |
| Swedish Open - Kval | 2023/05/11 09:55 | Mykhailo Vyshnevyi v Nicolas A. Mueller | W | 0-2 |
| Luxembourg Open - Kval | 2023/05/04 09:30 | Yu Huang v Nicolas A. Mueller | L | 2-0 |
| Swiss Open - Kval | 2023/03/21 10:40 | Joran Kweekel v Nicolas A. Mueller | L | 2-0 |
| Portugal Int. - Kval | 2023/03/09 16:00 | Gregoire Deschamp v Nicolas A. Mueller | L | 2-0 |
| Portugal Int. - Kval | 2023/03/09 13:30 | Ernesto Baschwitz v Nicolas A. Mueller | W | 0-2 |
| Litauen Int. | 2023/06/09 10:55 | Iikka Heino v Cholan Kayan | W | 2-0 |
| Swedish Open - Kval | 2023/05/11 12:00 | Iikka Heino v Oleksii Titov | W | 2-0 |
| Swedish Open - Kval | 2023/05/11 07:40 | Jia Jie Tan v Iikka Heino | W | 0-2 |
| Luxembourg Open - Kval | 2023/05/04 14:00 | Mikolaj Szymanowski v Iikka Heino | L | 2-1 |
| Luxembourg Open - Kval | 2023/05/04 07:40 | Tino Daoudal v Iikka Heino | W | 1-2 |
| Estonian Int. - Kval | 2023/01/12 13:40 | Yu Kai Huang v Iikka Heino | L | 2-0 |
| Estonian Int. - Kval | 2023/01/12 10:55 | Iikka Heino v Karl Kert | W | 2-0 |
| Czech Open | 2022/10/21 17:00 | Viktor Ording Kauffman v Iikka Heino | L | 2-0 |