| Croatian Int. | 2023/09/29 11:00 | Jan Janostik v Thomas Fourcade | L | 0-2 |
| Croatia Int. Qual | 2023/09/28 19:00 | Michael Schausberger v Jan Janostik | W | 0-2 |
| Croatia Int. Qual | 2023/09/28 14:40 | Jan Janostik v Kereszti, Zoltan | W | 2-0 |
| Croatia Int. Qual | 2023/09/28 07:20 | Jan Janostik v Iljo Van Delsen | W | 2-0 |
| Slovenia Future Series | 2023/09/08 09:20 | Jan Janostik v Kian-Yu Oei | L | 0-2 |
| Bonn Int. Qual | 2023/05/31 10:30 | Rui Yang Ryan Tan v Jan Janostik | L | 2-1 |
| Austrian Open - Qualif. | 2023/05/25 11:00 | Jan Janostik v Dani, Harsheel | L | 0-2 |
| Austrian Open - Qualif. | 2023/05/25 08:35 | Jan Janostik v Kumar, Dhruv | W | 2-0 |
| Slovenia Future Series Qual | 2023/09/07 14:35 | Ziga Podgorsek v Romeo Makboul | L | 0-2 |
| Slovenia Future Series Qual | 2023/09/07 12:15 | Ziga Podgorsek v Jan Krumpak | W | 2-0 |
| Open de Slovénie - Qualif. | 2023/05/17 14:25 | Ziga Podgorsek v Naren Shankar Iyer | L | 0-2 |