Stadium: Court 1 Round: 27
| ITF Poland F11 | 2017/08/30 10:35 | Dembek, Michal v Yatsik, Yahor | 7-6,6-2 |
| ITF Poland F11 | 2017/08/29 14:30 | Dembek, Michal v Cordonnier, Gregorio | 6-3,6-1 |
| ITF Poland F10 | 2017/08/26 11:55 | Zdenek Kolar v Dembek, Michal | 6-4,6-3 |
| ITF Poland F10 | 2017/08/25 09:00 | Dembek, Michal v Ivanov, Vladimir | 6-1,6-1 |
| ITF Poland F10 | 2017/08/23 11:30 | Norfeldt, David v Dembek, Michal | 3-6,2-6 |
| ITF Poland F10 | 2017/08/22 09:55 | Dembek, Michal v Lozan, Kristian | 6-2,6-2 |
| ITF Poland F9 | 2017/08/15 08:00 | Dembek, Michal v Westerhof, Boy | 6-4,6-7,2-6 |
| ITF Poland F8 | 2017/08/05 08:00 | Dembek, Michal v Pawel Juszczak | 4-6,4-6 |
| ITF Poland F11 | 2017/08/31 12:30 | Kowalczyk, Mateusz v Wojnar, Bartosz | 6-2,6-2 |
| ITF Poland F11 | 2017/08/29 11:50 | Kowalczyk, Mateusz v Lozan, Kristian | 6-4,6-1 |
| ITF Poland F11 | 2017/08/27 08:00 | Mularczyk, Konrad v Kowalczyk, Mateusz | 2-6,2-6 |
| ITF Poland F8 | 2017/08/01 13:55 | Andrzejczuk, Adrian v Kowalczyk, Mateusz | 6-2,6-3 |
| ITF Poland F8 Qual | 2017/08/01 07:30 | Ivan Marrero Curbelo v Kowalczyk, Mateusz | 6-7,1-6 |
| ITF Poland F8 Qual | 2017/07/29 08:00 | Innocenti, Davide v Kowalczyk, Mateusz | 4-6,4-6 |
| ITF Italy F7 | 2017/04/03 11:45 | Kowalczyk, Mateusz v Gianluca Mager | 4-6,3-6 |
| ITF Italy F7 Qual | 2017/04/02 07:30 | Javier Barranco Cosano v Kowalczyk, Mateusz | 3-6,4-6 |