Stadium: Court 1 Round: 44
| ITF Poland F10 Qual | 2017/08/21 08:00 | Marcin Gawron v Konrad Mularczyk | 6-4,6-0 |
| ITF Poland F10 Qual | 2017/08/19 08:00 | Konrad Mularczyk v Oleksander Kyrychenko | 3-6,7-5,7-6 |
| ITF Poland F9 Qual | 2017/08/13 10:30 | Konrad Mularczyk v Jeremy Gschwendtner | 2-6,2-6 |
| ITF Poland F9 Qual | 2017/08/12 08:00 | Konrad Mularczyk v Igor Filipovic | 6-1,7-6 |
| ITF Poland F6 Qual | 2017/07/15 08:00 | Roman Boychuk v Konrad Mularczyk | 6-4,6-2 |
| ITF Poland F5 Qual | 2017/07/10 08:00 | Harrison Lombe v Konrad Mularczyk | 6-2,6-4 |
| ITF Poland F4 Qual | 2017/07/02 13:00 | Konrad Mularczyk v Thibault Cancel | 2-6,6-7 |
| ITF Poland F1 | 2017/06/10 08:00 | Konrad Mularczyk v Jonas Eriksson Ziverts | 1-6,0-6 |
| 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 Italy F7 Qual | 2017/04/02 07:30 | Javier Barranco Cosano v Mateusz Kowalczyk | 3-6,4-6 |
| ITF Italy F7 Qual | 2017/04/01 07:30 | Mateusz Kowalczyk v Alexandru Catalin Marasin | 6-0,7-5 |
| Challenger Brescia Qual | 2016/11/12 10:55 | Mateusz Kowalczyk v Laurynas Grigelis | 6-7,2-6 |
| Challenger Szczecin | 2015/09/16 11:00 | Mateusz Kowalczyk v Marco Cecchinato | 3-6,4-6 |