Round: 62 Ground: Clay
| ITF Spain F38 | 2016/11/06 09:00 | Bruno Mardones v Martins Rocens | 6-3,6-4 |
| ITF Turkey F14 | 2017/04/08 07:00 | Andrey Chepelev v Piotr Grynkowski | 6-4,6-3 |
| ITF Turkey F13 | 2017/04/03 08:00 | Piotr Grynkowski v Jordi Walder | 1-6,6-4,5-7 |
| ITF Turkey F13 | 2017/04/02 07:30 | Piotr Grynkowski v Philip Sikman | 7-5,6-2 |
| ITF Turkey F7 | 2017/02/19 06:30 | Piotr Grynkowski v Pavel Krainik | 1-6,4-6 |
| ITF Turkey F6 | 2017/02/12 07:00 | Domagoj Biljesko v Piotr Grynkowski | 6-4,6-4 |
| ITF Turkey F6 | 2017/02/11 06:00 | Piotr Grynkowski v Kevin Lynch | 6-2,4-6,6-2 |
| ITF Turkey F42 | 2016/10/17 07:30 | Volodymyr Uzhylovskyi v Piotr Grynkowski | 6-4,6-2 |
| ITF Turkey F42 | 2016/10/16 07:30 | Polat Gulcur v Piotr Grynkowski | 1-6,6-7 |