Stadium: Court 1 Round: 54 Ground: Clay
| ITF M15 Bratislava | 2021/08/18 09:40 | Eero Vasa v Michal Novansky | 3-6,6-2,3-6 |
| ITF M15 Bratislava | 2021/08/17 08:00 | Julian Cash v Eero Vasa | 4-6,3-6 |
| ITF M15 Bratislava | 2021/08/16 08:00 | Iiro Vasa v Eero Vasa | 1-6,3-6 |
| ITF M15 Parnu | 2021/08/04 13:30 | Siim Troost v Eero Vasa | 6-3,6-1 |
| ITF M15 Parnu | 2021/08/03 07:00 | Eero Vasa v Leevi Saatela | 7-5,6-3 |
| Challenger Tampere | 2021/07/18 09:45 | Alexander Erler v Eero Vasa | 6-2,3-6,6-2 |
| ITF M15 Helsinki | 2021/06/02 06:30 | Eero Vasa v Clement Tabur | 3-6,3-6 |
| ITF M15 Kouvola | 2021/05/27 07:00 | Lorenzo Rottoli v Eero Vasa | 6-3,6-1 |
| ITF M15 Novi Sad | 2021/08/02 09:30 | Aleksandar Tomas v Simon Habsuda | 6-1,6-0 |
| ITF M15 Novi Sad | 2021/08/01 11:15 | Simon Habsuda v Obrad Markovski | 1-6,6-3,11-9 |
| ITF M25 Kottingbrunn | 2021/07/18 07:30 | Simon Habsuda v Niklas Rohrer | 1-6,5-7 |
| ITF M15 Skopje | 2021/06/06 09:00 | Simon Habsuda v Luka Pavlovic | 3-6,2-6 |
| ITF M15 Novomoskovsk | 2021/05/31 06:15 | Aliaksandr Liaonenka v Simon Habsuda | 6-2,6-0 |
| ITF M15 Novomoskovsk | 2021/05/30 06:15 | Oleksandr Bielinskyi v Simon Habsuda | 6-3,3-6,8-10 |