Stadium: Ustron 1 Round: 27 Ground: Clay
| ITF Poland F4 MD | 2018/05/23 12:30 | Bedra/Galka v Grzegorczyk/Kowalczyk | 6-1,4-6,1-0 |
| ITF Poland F4 MD | 2018/05/23 12:30 | Bedra/Galka v Grzegorczyk/Kowalczyk | 6-1,4-6,1-0 |
| ITF Poland F4 MD | 2018/05/22 14:55 | Kossek/Poljak v Bedra/Galka | 6-4,6-7,8-10 |
| ITF Poland F4 MD | 2018/05/23 12:30 | Bedra/Galka v Grzegorczyk/Kowalczyk | 6-1,4-6,1-0 |
| ITF Poland F4 MD | 2018/05/22 13:30 | Besada/Den Heijer v Grzegorczyk/Kowalczyk | 3-6,5-7 |
| ITF Poland F11 MD | 2017/08/30 14:30 | Dembek/Gawron v Grzegorczyk/Kowalczyk | 6-4,6-2 |
| ITF Poland F10 MD | 2017/08/24 13:50 | Dembek/Hurkacz v Grzegorczyk/Kowalczyk | 6-1,6-4 |
| ITF Poland F10 MD | 2017/08/23 10:30 | Ivanov/Kerner v Grzegorczyk/Kowalczyk | 1-6,2-6 |
| ITF Poland F10 MD | 2017/08/21 12:25 | Grzegorczyk/Kowalczyk v Kolisnyk/Prihodko | 6-2,7-5 |
| ITF Czech Republic F3 MD | 2017/06/02 12:00 | Michnev/Vocel v Grzegorczyk/Kowalczyk | 6-4,6-3 |
| ITF Czech Republic F3 MD | 2017/06/01 11:30 | Mertl/Stanek v Grzegorczyk/Kowalczyk | 2-6,2-6 |