Stadium: Court 1 Round: 54 Ground: Hardcourt outdoor
| ITF M15 Helsinki | 2022/08/10 11:45 | Filip Peliwo v Siim Troost | 6-1,6-1 |
| ITF M15 Parnu | 2022/08/04 09:05 | Siim Troost v Eero Vasa | 6-3,4-6,2-6 |
| ITF M15 Parnu | 2022/08/03 13:15 | Siim Troost v Maxime Dubouch | 6-1,6-1 |
| ITF M15 Vaasa | 2022/06/02 08:15 | Ivan Nedelko v Siim Troost | 7-6,6-1 |
| ITF M15 Vaasa | 2022/06/01 16:00 | Fabian Hansch Mauritzson v Siim Troost | 0-6,2-6 |
| ITF M15 Kouvola | 2022/05/18 08:30 | Bekkhan Atlangeriev v Siim Troost | 7-5,6-7,6-1 |
| Davis Cup | 2021/09/18 14:30 | Jerome Kym v Siim Troost | 6-3,6-1 |
| ITF M15 Parnu | 2021/08/05 07:00 | Vladimir Ivanov v Siim Troost | 4-6,7-6,6-3 |
| ITF M15 Parnu | 2022/10/24 08:30 | Hermanni Tiainen v Eric Morris | 4-6,4-6 |
| Challenger Tampere | 2022/07/17 07:00 | Hermanni Tiainen v Lorenzo Bocchi | 3-6,1-6 |
| ITF M15 Vaasa | 2022/05/30 13:00 | Elmer Moller v Hermanni Tiainen | 6-0,6-0 |
| ITF M15 Kouvola | 2022/05/18 07:00 | Peetu Pohjola v Hermanni Tiainen | 2-6,6-3,6-3 |
| ITF M15 Parnu | 2021/10/25 09:00 | Hermanni Tiainen v Ying Hou | 2-6,2-6 |
| ITF M25 Madrid | 2021/09/13 09:00 | Hermanni Tiainen v Constantinos Koshis | 4-6,4-6 |
| ITF M25 Madrid | 2021/09/12 13:00 | Hermanni Tiainen v Adria V. Ferrer | 6-3,6-3 |
| ITF M15 Helsinki | 2021/05/31 08:30 | Matvey Minin v Hermanni Tiainen | 7-6,6-1 |