Stadium: Court 3 Round: 62
| Challenger Poznan Qual | 2017/07/15 09:00 | Piotr Grynkowski v Norbert Tadyszak | 6-3,6-3 |
| ITF Poland F4 Qual | 2017/07/03 08:00 | Mattias Siimar v Piotr Grynkowski | 6-2,6-2 |
| ITF Poland F4 Qual | 2017/07/02 13:00 | Martins Rocens v Piotr Grynkowski | 4-6,2-6 |
| 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 Poland F8 | 2017/08/01 14:20 | Kristian Lozan v Mikolaj Borkowski | 6-2,6-3 |
| ITF Poland F8 Qual | 2017/07/31 07:43 | Mikolaj Borkowski v Michal Sikorski | 6-1,5-0 |
| ITF Poland F7 Qual | 2017/07/24 11:10 | Volodymyr Uzhylovskyi v Mikolaj Borkowski | 6-3,7-5 |
| ITF Poland F7 Qual | 2017/07/23 11:00 | Mikolaj Borkowski v Daniil Tsebrenko | 6-4,6-1 |
| ITF Poland F6 Qual | 2017/07/16 08:00 | Dominik Nazaruk v Mikolaj Borkowski | 4-6,6-3,6-2 |
| ITF Poland F5 Qual | 2017/07/10 08:00 | Karol Drzewiecki v Mikolaj Borkowski | 6-2,6-4 |
| ITF Poland F5 Qual | 2017/07/09 13:00 | Mikolaj Borkowski v Mislav Bosnjak | 6-3,6-4 |
| ITF Poland F4 Qual | 2017/07/02 08:00 | Feliksas Sakalauskas v Mikolaj Borkowski | 6-4,6-3 |