Round: 44 Ground: Clay
| ITF Poland F11 | 2017/09/01 12:20 | Michal Dembek v Mateusz Kowalczyk | 7-5,6-3 |
| ITF Poland F11 | 2017/08/31 12:30 | Mateusz Kowalczyk v Bartosz Wojnar | 6-2,6-2 |
| ITF Poland F11 | 2017/08/29 11:50 | Mateusz Kowalczyk v Kristian Lozan | 6-4,6-1 |
| ITF Poland F11 | 2017/08/27 08:00 | Konrad Mularczyk v Mateusz Kowalczyk | 2-6,2-6 |
| ITF Poland F8 | 2017/08/01 13:55 | Adrian Andrzejczuk v Mateusz Kowalczyk | 6-2,6-3 |
| ITF Poland F8 Qual | 2017/08/01 07:30 | Ivan Marrero Curbelo v Mateusz Kowalczyk | 6-7,1-6 |
| ITF Poland F8 Qual | 2017/07/29 08:00 | Davide Innocenti v Mateusz Kowalczyk | 4-6,4-6 |
| ITF Italy F7 | 2017/04/03 11:45 | Mateusz Kowalczyk v Gianluca Mager | 4-6,3-6 |
| ITF Egypt F36 | 2017/11/26 09:30 | Fares Zakaria v Joseph W. Van Meter | 6-2,3-6,6-1 |
| ITF Egypt F36 | 2017/11/25 07:30 | Fares Zakaria v Dmitry Resnyanskiy | 6-2,6-1 |
| ITF Egypt F25 | 2017/09/10 10:30 | Fares Zakaria v Adham Gaber | 1-6,3-6 |