| Luxembourg Open - Kwal. | 2023/05/04 09:20 | Aaron Sonnenschein v Leo Holzmer | L | 2-0 |
| Portugal Int. - Kwal. | 2023/03/08 09:00 | Filip Spoljarec v Leo Holzmer | L | 2-0 |
| Slovenia Int. - Kwal. | 2022/05/18 10:40 | Leo Holzmer v Kilian Meusburger | L | 0-2 |
| Luxembourg Open - Kwal. | 2022/05/05 10:20 | Leo Holzmer v Louis Ducrot | L | 0-2 |
| Dutch Int. - Kwal. | 2022/04/13 09:00 | Nadeem Dalvi v Leo Holzmer | L | 2-0 |
| Slovenië - Future Series - Kwal. | 2021/11/25 10:10 | Leo Holzmer v Ivan Pejoski | W | 2-0 |
| Hellas Int. - Kwal. | 2021/09/02 07:00 | Andrej Antoska v Leo Holzmer | L | 2-0 |
| EK teams | 2020/02/12 11:30 | Joran Kweekel v Leo Holzmer | L | 2-0 |