Stadium: Court 3 Round: 25 Ground: Clay
| ITF M15 Bratislava | 2021/08/24 08:00 | Eero Vasa v Adria Soriano Barrera | 6-3,2-6,10-5 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Eero Vasa v Simon Habsuda | 6-1,6-1 |
| 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 Bratislava | 2021/08/24 08:00 | Antonin Stepanek v Lukas H Lilleengen | 6-0,4-6,3-10 |
| ITF M15 Bratislava | 2021/08/23 09:00 | Patrik Jancovic v Lukas H Lilleengen | 0-6,2-6 |
| ITF M15 Bratislava | 2021/08/17 08:00 | Zsombor Velcz v Lukas H Lilleengen | 7-5,6-2 |
| ITF M15 Bratislava | 2021/08/16 12:00 | Isa Mammetgulyyev v Lukas H Lilleengen | 3-6,1-6 |
| ITF M15 Frederiksberg | 2021/08/01 08:00 | Lukas H Lilleengen v Facundo Yunis | 6-3,1-6,5-10 |
| ITF M15 Vejle | 2021/07/25 07:00 | Lukas H Lilleengen v Carl Emil Overbeck | 2-6,6-4,7-10 |
| ITF M15 Perugia | 2021/07/18 12:45 | Lukas H Lilleengen v Mattia Frinzi | 3-6,3-6 |
| ITF M25 Montauban | 2021/06/21 13:00 | Thibault Verdier v Lukas H Lilleengen | 6-7,6-2,10-8 |