ITF Egypt F38 12/13 11:45 25 Kowalczyk, Mateusz v Barton, Dominik Cancelled
ITF Egypt F37 12/06 08:30 25 Jordan Correia Passos Do Carmo v Kowalczyk, Mateusz Retired
ITF Egypt F37 12/04 09:00 44 Kowalczyk, Mateusz v Winkler, Georg 7-6,6-4
ITF Egypt F37 12/03 09:00 44 Kowalczyk, Mateusz v Makzoume, Yacoub 6-4,6-2
ITF Egypt F36 11/29 12:20 25 Kowalczyk, Mateusz v Kolisnyk, Olexiy 1-6,3-6
ITF Egypt F36 11/27 09:30 44 Kowalczyk, Mateusz v Fares Zakaria 6-1,6-1
ITF Poland F11 09/01 12:20 27 Dembek, Michal v Kowalczyk, Mateusz 7-5,6-3
ITF Poland F11 08/31 12:30 26 Kowalczyk, Mateusz v Wojnar, Bartosz 6-2,6-2
ITF Poland F11 08/29 11:50 25 Kowalczyk, Mateusz v Lozan, Kristian 6-4,6-1
ITF Poland F11 08/27 08:00 44 Mularczyk, Konrad v Kowalczyk, Mateusz 2-6,2-6
ITF Poland F8 08/01 13:55 25 Andrzejczuk, Adrian v Kowalczyk, Mateusz 6-2,6-3
ITF Poland F8 Qual 08/01 07:30 44 Ivan Marrero Curbelo v Kowalczyk, Mateusz 6-7,1-6
ITF Poland F8 Qual 07/29 08:00 44 Innocenti, Davide v Kowalczyk, Mateusz 4-6,4-6
ITF Italy F7 04/03 11:45 25 [149] Kowalczyk, Mateusz v Gianluca Mager [337] 4-6,3-6
ITF Italy F7 Qual 04/02 07:30 54 Javier Barranco Cosano v Kowalczyk, Mateusz 3-6,4-6
ITF Italy F7 Qual 04/01 07:30 54 Kowalczyk, Mateusz v Marasin, Alexandru Catalin 6-0,7-5
Challenger Brescia Qual 11/12 10:55 45 Kowalczyk, Mateusz v Grigelis, Laurynas 6-7,2-6
Challenger Szczecin 09/16 11:00 25 Kowalczyk, Mateusz v Marco Cecchinato 3-6,4-6
ITF Czech Republic F4 10/24 08:00 - Kowalczyk, Mateusz v Mertl, Jan Retired
ITF Czech Republic F4 10/23 09:30 - Kapas, Andriej v Kowalczyk, Mateusz 5-7,4-6
ITF Czech Republic F4 Qual 10/21 11:10 - Kowalczyk, Mateusz v Recek, Dominik 6-3,6-2
Challenger Szczecin 09/09 10:50 25 Kowalczyk, Mateusz v Pavlasek, Adam 4-6,3-6
Challenger Szczecin Qual 09/08 12:30 44 Wagner, Bastian v Kowalczyk, Mateusz 4-6,1-6
ITF Poland F7 Qual 08/31 12:00 - Kowalczyk, Mateusz v Vladyslav Orlov Retired
ITF Poland F6 08/27 10:00 - Teurer, Rafal v Kowalczyk, Mateusz 4-6,4-6
ITF Poland F5 08/21 13:10 - Kowalczyk, Mateusz v Sikora, Adrian 1-6,6-3,6-7
ITF Poland F5 08/19 08:00 - Majchrowicz, Adam v Kowalczyk, Mateusz 7-6,4-6,1-6