Round: 54 Ground: Clay
| ITF Finland F3 Qual | 2017/08/12 07:00 | Patrik Brydolf v Aaron Prandstetter | 6-4,6-0 |
| ITF Austria F8 | 2016/08/27 12:00 | Lucas Miedler v Aaron Prandstetter | 6-2,6-0 |
| ITF Greece F5 | 2018/03/24 07:30 | Hermanni Tiainen v Duje Ajdukovic | 0-6,4-6 |
| ITF Greece F3 | 2018/03/10 10:00 | Evan Fragistas v Hermanni Tiainen | 6-1,6-1 |
| 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 |