Stadium: Centre Court Round: 29 Ground: Clay
| Challenger Poznan MD | 2018/06/08 14:55 | Kowalczyk/Walkow v Dembek/Zielinski | 7-6,6-3 |
| Challenger Poznan MD | 2018/06/07 13:30 | Laaksonen/Panfil v Kowalczyk/Walkow | 5-7,6-3,8-10 |
| Challenger Poznan MD | 2018/06/06 16:00 | Kowalczyk/Walkow v Daniel/Zapata Miralles | 7-6,6-1 |
| ITF Czech Republic F8 MD | 2017/11/05 09:30 | Drzewiecki/Smola v Kowalczyk/Walkow | 7-6,6-7,10-8 |
| ITF Czech Republic F8 MD | 2017/11/04 12:00 | Jaloviec/Michnev v Kowalczyk/Walkow | 4-6,4-6 |
| ITF Czech Republic F8 MD | 2017/11/02 15:00 | Hajek/Konecny v Kowalczyk/Walkow | 4-6,6-7 |
| ITF Czech Republic F7 MD | 2017/10/28 13:30 | Kowalczyk/Walkow v Lootsma/Poljak | 6-2,4-6,6-10 |
| ITF Czech Republic F7 MD | 2017/10/28 10:00 | Kowalczyk/Walkow v Gengel/Papik | 6-4,5-7,10-3 |