Stadium: Court 8 Round: 62 Ground: Hardcourt outdoor
| ITF M15 Anif | 2020/08/23 07:00 | Davide Galoppini v Niklas Waldner | 6-3,6-4 |
| ITF M25 Vogau | 2020/08/17 11:30 | Niklas Waldner v Alexander Shevchenko | 4-6,2-6 |
| ITF M25 Vogau | 2020/08/17 07:30 | Dean Thurner v Niklas Waldner | 4-6,6-2,5-10 |
| Austrian Tennis Championship | 2020/07/28 12:00 | Lucas Miedler v Niklas Waldner | 6-3,6-2 |
| Austrian Tennis Championship | 2020/07/27 10:00 | David Pichler v Niklas Waldner | 6-0,6-0 |
| Austrian OTV Series | 2020/07/15 09:30 | Sandro Kopp v Niklas Waldner | 6-1,6-0 |
| Austrian Tennis Championship | 2020/07/14 14:55 | Bjorn Nareyka v Niklas Waldner | 7-6,1-6,0-6 |
| Austrian Tennis Championship | 2020/07/13 10:10 | Philip Bachmaier v Niklas Waldner | 3-6,3-6 |
| ITF M15 Monastir | 2021/04/21 08:30 | Iiro Vasa v Michal Dembek | 5-7,7-5,2-6 |
| ITF M15 Monastir | 2021/04/20 10:30 | Remy Bertola v Iiro Vasa | 2-6,6-4,8-10 |
| ITF M15 Monastir | 2021/04/19 12:00 | Iiro Vasa v Lorenzo Bresciani | 7-6,1-6,10-7 |
| ITF M15 Nur-Sultan | 2021/02/09 03:55 | Yaraslav Shyla v Iiro Vasa | 6-3,6-0 |
| ITF M15 Nur-Sultan | 2021/02/08 04:00 | Islam Orynbasar v Iiro Vasa | 3-6,2-6 |
| ITF M15 Nur-Sultan | 2021/02/01 07:30 | Iiro Vasa v Sagadat Ayap | 3-6,6-2,8-10 |
| ITF M15 Parnu | 2020/11/04 09:25 | Iiro Vasa v Otto Virtanen | 3-6,2-6 |
| ITF M15 Parnu | 2020/11/02 08:00 | Iiro Vasa v Simonas Zukauskas | 6-2,6-3 |