Stadium: Court 1 Round: 25 Ground: Hardcourt indoor
| ITF M25 Plaisir | 2021/09/15 10:15 | Thomas Laurent v Filip Bergevi | 6-1,6-4 |
| ITF M25 Ricany | 2021/09/01 11:40 | Filip Bergevi v Facundo Diaz Acosta | 3-6,4-6 |
| ITF M25 Poznan | 2021/08/25 08:00 | Filip Bergevi v Adrian Oetzbach | 4-6,2-6 |
| ITF M15 Lodz | 2021/08/18 08:00 | Filip Bergevi v Tommaso Compagnucci | 6-7,6-4,6-7 |
| ITF M15 Vejle | 2021/07/27 09:15 | Matias Zukas v Filip Bergevi | 6-2,6-2 |
| ITF M25 Casinalbo | 2021/07/05 19:20 | Gianmarco Ferrari v Filip Bergevi | 6-1,7-6 |
| ITF M15 Helsinki | 2021/06/02 11:20 | Otto Virtanen v Filip Bergevi | 3-6,6-4,6-2 |
| ITF M15 Jeruzsálem | 2021/05/12 07:00 | Justin Roberts v Filip Bergevi | 6-3,6-4 |
| ITF M25 Plaisir | 2021/09/15 11:45 | Johannes Haerteis v Leny Mitjana | 4-6,6-7 |
| Challenger Tulln | 2021/09/06 13:00 | Johannes Haerteis v Filip Horansky | 6-4,4-6,3-6 |
| Challenger Mallorca | 2021/09/01 18:40 | Johannes Haerteis v Lukas Lacko | 2-6,3-6 |
| Challenger Mallorca | 2021/08/31 08:00 | Nicolas Moreno De Alboran v Johannes Haerteis | 3-6,6-4,4-6 |
| Challenger Mallorca | 2021/08/30 08:00 | Sergio Martos Gornes v Johannes Haerteis | 1-6,1-6 |
| Challenger Prague | 2021/08/24 10:15 | Johannes Haerteis v Alex Rybakov | 4-6,2-6 |
| Challenger Luedenscheid | 2021/08/15 09:30 | Bogdan Bobrov v Johannes Haerteis | 1-6,6-4,6-3 |
| Challenger Meerbusch | 2021/08/08 16:05 | Ivan Nedelko v Johannes Haerteis | 7-6,6-3 |