| Lithuanian Int. | 2023/06/10 09:05 | Nicolas A. Mueller v Iikka Heino | L | 2-1 |
| Scottish Open | 2023/10/06 08:40 | Iikka Heino v Jan Louda | L | 0-2 |
| Scottish Open Qual | 2023/10/05 13:05 | Iikka Heino v Felix Wright | W | 2-0 |
| Scottish Open Qual | 2023/10/05 10:20 | Iikka Heino v Salim Ben Boudinar | W | 2-0 |
| Lithuanian Int. | 2023/06/10 09:05 | Nicolas A. Mueller v Iikka Heino | L | 2-1 |
| Lithuanian Int. | 2023/06/09 10:55 | Iikka Heino v Cholan Kayan | W | 2-0 |
| Swedish Open Qual | 2023/05/11 12:00 | Iikka Heino v Oleksii Titov | W | 2-0 |
| Swedish Open Qual | 2023/05/11 07:40 | Jia Jie Tan v Iikka Heino | W | 0-2 |
| Luxembourg Open Qual | 2023/05/04 14:00 | Mikolaj Szymanowski v Iikka Heino | L | 2-1 |
| Czech Open | 2023/10/20 09:00 | Jeppe Bruun Christensen v Nicolas A. Mueller | L | 2-1 |
| Bulgarian Int | 2023/10/06 07:15 | Nicolas A. Mueller v Enrico Baroni | L | 0-2 |
| Latvia Int. | 2023/09/01 10:20 | Nicolas A. Mueller v Daniil Dubovenko | - | away |
| Nouvelle Aquitane Future Series | 2023/07/07 15:45 | Julien Scheiwiller v Nicolas A. Mueller | L | 2-1 |
| Nouvelle Aquitane Future Series | 2023/07/07 09:20 | Nicolas A. Mueller v Brian Holtschke | W | 2-0 |
| Lithuanian Int. | 2023/06/11 07:20 | Nicolas A. Mueller v Kian-Yu Oei | L | 0-2 |
| Lithuanian Int. | 2023/06/10 14:30 | Nicolas A. Mueller v Brian Holtschke | W | 2-0 |
| Lithuanian Int. | 2023/06/10 09:05 | Nicolas A. Mueller v Iikka Heino | W | 2-1 |