Stadium: C Round: 45 Ground: Clay
| ITF Finland F4 Qual | 2016/11/11 23:00 | Hermanni Tiainen v Jason Sormunen | 6-2,7-5 |
| ITF Finland F4 Qual | 2017/11/11 11:00 | Alexey Aleshchev v Hermanni Tiainen | 7-6,6-3 |
| ITF Finland F3 Qual | 2017/08/12 07:00 | Panu Virtanen v Hermanni Tiainen | 6-3,6-2 |
| ITF Finland F2 | 2017/08/08 11:00 | Marco Bortolotti v Hermanni Tiainen | 6-3,6-1 |
| ITF Finland F2 Qual | 2017/08/07 07:00 | Ricardo David Mayagoitia v Hermanni Tiainen | 4-6,0-6 |
| ITF Finland F1 Qual | 2017/07/29 09:30 | William Genesen v Hermanni Tiainen | 6-3,6-2 |
| ITF Estonia F1 | 2017/07/22 13:00 | Julius Tverijonas v Hermanni Tiainen | 6-2,6-1 |
| ITF Turkey F17 | 2017/04/29 09:00 | Anton Chekhov v Hermanni Tiainen | 6-1,7-5 |
| ITF Turkey F16 | 2017/04/22 09:00 | Hermanni Tiainen v Jussi Tiainen | 5-7,2-6 |
| ITF Finland F4 Qual | 2017/11/11 08:00 | Jason Sormunen v Roni Rikkonen | 3-6,3-6 |
| ITF Finland F1 Qual | 2017/07/29 07:30 | Alex Hedman v Jason Sormunen | 6-3,6-0 |
| ITF Finland F4 Qual | 2016/11/11 23:00 | Hermanni Tiainen v Jason Sormunen | 6-2,7-5 |