| ITF Poland F8 Qual | 2017/07/30 08:00 | Ivan Marrero Curbelo v Boerma, Pelle | 6-3,3-6,7-5 |
| ITF Poland F7 | 2017/07/27 12:05 | Toledo Bague, Pol v Ivan Marrero Curbelo | 6-1,6-2 |
| ITF Poland F6 | 2017/07/18 11:00 | Ivan Marrero Curbelo v van Beem, Colin | 2-6,2-6 |
| ITF Poland F5 Qual | 2017/07/10 08:00 | Krolik, Patryk v Ivan Marrero Curbelo | 6-2,6-3 |
| ITF Poland F5 Qual | 2017/07/09 12:30 | Pociej, Ksawery v Ivan Marrero Curbelo | 3-6,1-6 |
| ITF Poland F4 Qual | 2017/07/02 08:00 | Kawka, Patrick v Ivan Marrero Curbelo | 6-3,6-2 |
| ITF Spain F18 Qual | 2017/06/17 06:00 | Alastair Gray v Ivan Marrero Curbelo | 6-1,6-3 |
| ITF Spain F17 | 2017/06/11 09:00 | Plaza, Santiago v Ivan Marrero Curbelo | 6-4,6-2 |
| 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 |
| ITF Italy F7 Qual | 2017/04/01 07:30 | Kowalczyk, Mateusz v Marasin, Alexandru Catalin | 6-0,7-5 |
| Challenger Brescia Qual | 2016/11/12 10:55 | Kowalczyk, Mateusz v Grigelis, Laurynas | 6-7,2-6 |
| Challenger Szczecin | 2015/09/16 11:00 | Kowalczyk, Mateusz v Marco Cecchinato | 3-6,4-6 |
| ITF Czech Republic F4 | 2014/10/23 09:30 | Kapas, Andriej v Kowalczyk, Mateusz | 5-7,4-6 |
| ITF Czech Republic F4 Qual | 2014/10/21 11:10 | Kowalczyk, Mateusz v Recek, Dominik | 6-3,6-2 |