| Challenger Poznan MD | 2018/06/08 14:55 | Kowalczyk/Walkow v Dembek/Zielinski | 7-6,6-3 |
| Challenger Poznan MD | 2018/06/07 15:20 | Dembek/Zielinski v Estrella Burgos/Quiroz | 6-4,6-3 |
| ITF Estonia F1 MD | 2016/07/28 22:00 | Polyakov/Tyurnev v Dembek/Zielinski | 5-7,5-7 |
| ITF Estonia F1 MD | 2016/07/27 22:00 | Dembek/Zielinski v Garcia-Roman/Lombe | 6-2,6-3 |
| ITF Lithuania F1 MD | 2016/07/22 13:55 | Grigelis/Mugevicius v Dembek/Zielinski | 7-5,6-4 |
| ITF Lithuania F1 MD | 2016/07/21 12:35 | Dembek/Zielinski v Babelis/Zemaitelis | 6-7,6-3,10-8 |
| ITF Poland F3 MD | 2016/06/09 13:40 | Kapas/Majchrowicz v Dembek/Zielinski | 6-3,7-6 |
| ITF Egypt F9 MD | 2015/11/27 14:30 | Dembek/Zielinski v Drzewiecki/Smola | 5-7,3-6 |