Round: 62 Ground: Clay
| ITF Poland F4 Qual | 2017/07/01 13:00 | Martins Rocens v Javier Apellaniz Napal | 6-2,6-0 |
| ITF Spain F38 | 2016/11/06 09:00 | Bruno Mardones v Martins Rocens | 6-3,6-4 |
| ITF Poland F3 | 2017/06/27 13:40 | Piotr Grynkowski v Markus Eriksson | 2-6,2-6 |
| ITF Poland F2 | 2017/06/18 08:30 | Piotr Grynkowski v Szymon Walkow | 1-6,6-3,3-6 |
| ITF Turkey F17 | 2017/05/01 07:30 | Gorazd Srbljak v Piotr Grynkowski | 6-3,6-2 |
| ITF Turkey F16 | 2017/04/25 07:00 | Volodymyr Uzhylovskyi v Piotr Grynkowski | 2-6,6-2,6-1 |
| ITF Turkey F16 | 2017/04/24 07:30 | Fermin Tenti v Piotr Grynkowski | 7-5,5-7,4-6 |
| ITF Turkey F16 | 2017/04/23 07:00 | Mert Naci Turker v Piotr Grynkowski | 4-6,2-6 |
| ITF Turkey F15 | 2017/04/16 07:00 | Juan Carlos Saez v Piotr Grynkowski | 6-3,6-2 |
| ITF Turkey F14 | 2017/04/08 07:00 | Andrey Chepelev v Piotr Grynkowski | 6-4,6-3 |