Stadium: Court 5 Round: 44 Ground: Clay
| ITF Poland F9 Qual | 2017/08/13 10:30 | Piotr Grynkowski v Mikolaj Borkowski | 6-2,7-6 |
| ITF Poland F7 | 2018/08/12 11:00 | Piotr Grynkowski v Marco Di Maro | 7-5,6-3 |
| ITF Poland F6 | 2018/08/07 08:00 | Szymon Walkow v Piotr Grynkowski | 6-3,6-2 |
| ITF Ireland F1 Qual | 2018/07/30 09:30 | Piotr Grynkowski v Jonathan Binding | 4-6,2-6 |
| ITF Czech Republic F5 Qual | 2018/07/02 10:00 | Piotr Grynkowski v Antonin Stepanek | 2-6,0-6 |
| ITF Czech Republic F5 Qual | 2018/07/01 08:00 | Piotr Grynkowski v Michal Skonieczny | 6-2,6-3 |
| ITF Poland F4 | 2018/05/22 08:55 | Pawel Juszczak v Piotr Grynkowski | 6-2,6-3 |
| 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 F7 | 2018/08/12 11:00 | Mikolaj Borkowski v Dominik Langmajer | 7-5,6-4 |
| ITF Poland F6 Qual | 2018/08/06 09:50 | Mikolaj Borkowski v Mateusz Piatek | 1-6,1-6 |
| ITF Poland F6 Qual | 2018/08/04 11:00 | Benedict Moerl v Mikolaj Borkowski | 6-7,7-5,1-6 |
| ITF Poland F11 | 2017/08/29 11:45 | Mikolaj Borkowski v Yahor Yatsyk | 4-6,4-6 |
| ITF Poland F11 | 2017/08/27 08:00 | Pawel Jankowiak v Mikolaj Borkowski | 6-3,1-6,5-7 |
| ITF Poland F11 | 2017/08/26 08:00 | Mikolaj Borkowski v Kacper Dworak | 6-3,6-4 |
| ITF Poland F10 Qual | 2017/08/21 08:00 | Oleg Prihodko v Mikolaj Borkowski | 6-2,6-3 |
| ITF Poland F9 Qual | 2017/08/13 10:30 | Piotr Grynkowski v Mikolaj Borkowski | 6-2,7-6 |