Stadium: Court 6 Center Round: 54 Ground: Hardcourt indoor
| ITF M15 Chornomorsk | 2021/09/03 07:00 | Yan Bondarevskiy v Julius Tverijonas | 6-2,6-3 |
| ITF M15 Chornomorsk | 2021/09/02 07:00 | Julius Tverijonas v Roman Boychuk | 6-2,6-2 |
| ITF M15 Chornomorsk | 2021/08/31 07:00 | Beibit Zhukayev v Julius Tverijonas | 1-6,2-6 |
| ITF M15 Gdynia | 2021/08/10 08:00 | Julius Tverijonas v Alexis Canter | 2-6,2-6 |
| ITF M15 Gdynia | 2021/08/09 08:00 | Julius Tverijonas v Dominik Recek | 6-1,6-2 |
| ITF M15 Parnu | 2021/08/04 09:05 | Julius Tverijonas v Alexander Kotzen | 6-3,5-7,2-6 |
| ITF M15 Tbilisi | 2021/05/19 06:00 | Aleksandr Braynin v Julius Tverijonas | 6-4,7-5 |
| Baltic Tennis League | 2020/06/17 13:30 | Mikelis Libietis v Julius Tverijonas | 3-6,1-6 |
| ITF M15 Parnu | 2021/10/26 08:00 | Tom Gentzsch v Oskar Antinheimo | 6-2,6-4 |
| ITF M25 Falun | 2021/09/26 08:00 | Lucas Renard v Oskar Antinheimo | 7-5,5-7,10-6 |
| ITF M15 Parnu | 2021/08/02 09:30 | Oskar Antinheimo v Petro Orlando Fellin | 5-7,3-6 |
| ITF M15 Helsinki | 2021/06/01 07:00 | Oskar Antinheimo v Roni Mikael Hietaranta | 2-6,1-6 |
| ITF M15 Helsinki | 2021/05/31 08:30 | Pierre Delage v Oskar Antinheimo | 6-7,7-5,8-10 |
| ITF M15 Kouvola | 2021/05/25 08:30 | Karl Kiur Saar v Oskar Antinheimo | 6-3,6-0 |
| ITF M15 Pajulahti | 2019/09/18 12:20 | Naoki Tajima v Oskar Antinheimo | 6-2,6-1 |
| ITF M15 Helsinki | 2019/08/21 10:55 | Oskar Antinheimo v Patrik Niklas-Salminen | 2-6,2-6 |