Stadium: Ustron 1 Round: 25 Ground: Clay
| ITF Poland F3 | 2018/05/21 09:00 | Sekou Bangoura v Pawel Juszczak | 4-6,7-5,6-4 |
| ITF Poland F3 | 2018/05/20 09:00 | Pavel Nejedly v Pawel Juszczak | 7-5,4-6,1-6 |
| ITF Poland F3 | 2018/05/19 13:05 | Dante Gennaro v Pawel Juszczak | 6-7,6-2,4-6 |
| ITF Poland F3 | 2018/05/18 12:00 | Wojciech Marek v Pawel Juszczak | 6-7,1-6 |
| ITF Poland F3 | 2018/05/14 10:30 | Jonathan Gray v Pawel Juszczak | 4-6,4-6 |
| ITF Poland F2 | 2018/05/11 10:40 | Martins Podzus v Pawel Juszczak | 6-1,6-2 |
| ITF Poland F2 | 2018/05/10 14:55 | Jannik Sinner v Pawel Juszczak | 6-4,2-6,4-6 |
| ITF Poland F2 | 2018/05/08 08:00 | Dan Dowson v Pawel Juszczak | 6-7,1-6 |
| ITF Poland F4 | 2018/05/21 07:00 | Piotr Grynkowski v Ramy Labna | 6-3,7-6 |
| ITF Poland F2 | 2018/05/06 08:00 | Janis Podzus v Piotr Grynkowski | 7-5,7-5 |
| ITF Poland F2 | 2018/05/05 12:30 | Noe Sytkow v Piotr Grynkowski | 2-6,7-6,1-6 |
| ITF Poland F1 | 2018/05/03 09:00 | Guy Den Heijer v Piotr Grynkowski | 6-1,6-2 |
| ITF Poland F1 | 2018/05/01 12:15 | Daniel Kossek v Piotr Grynkowski | 1-6,1-6 |
| ITF Poland F1 | 2018/04/30 07:00 | Dominik Recek v Piotr Grynkowski | 6-4,3-6,5-7 |
| ITF Poland F1 | 2018/04/29 07:00 | Duje Ajdukovic v Piotr Grynkowski | 6-3,5-7,3-6 |
| ITF Czech Republic F11 Qual | 2017/11/19 09:00 | Grzegorz Panfil v Piotr Grynkowski | 7-6,6-3 |