| ITF M25 Poznan | 2019/08/20 08:00 | Maciej Rajski v Kamil Gajewski | 6-1,6-3 |
| ITF M25 Poznan | 2019/08/19 08:00 | Kamil Gajewski v Noah Prehn | 6-1,6-7,10-6 |
| ITF M15 Koszalin | 2019/08/06 12:00 | Kamil Gajewski v Aliaksandr Liaonenka | 6-7,2-6 |
| ITF M15 Sharm El Sheikh | 2019/04/08 09:00 | Kamil Gajewski v Philip Bachmaier | 3-6,2-6 |
| ITF M15 Loule | 2019/03/05 14:30 | Juan Bautista Otegui v Kamil Gajewski | 6-2,7-5 |
| ITF Poland F6 | 2018/08/07 08:00 | Piotr Matuszewski v Kamil Gajewski | 6-3,4-6,6-4 |
| Challenger Sopot Qual | 2018/07/28 10:40 | Johannes Haerteis v Kamil Gajewski | 6-3,6-2 |
| ITF Poland F4 | 2018/05/21 07:00 | Kamil Gajewski v Nikolas Lahky | 6-3,6-7,1-6 |
| Challenger Szczecin | 2019/09/11 11:30 | Filip Kolasinski v Facundo Arguello | 4-6,6-7 |
| Challenger Szczecin | 2019/09/10 16:15 | Filip Kolasinski v Louis Wessels | 6-3,7-5 |
| ITF M25 Poznan | 2019/08/22 14:25 | Diego Hidalgo v Filip Kolasinski | 6-3,7-5 |
| ITF M25 Poznan | 2019/08/21 10:00 | Piotr Matuszewski v Filip Kolasinski | 2-6,6-4,5-7 |
| ITF M25 Poznan | 2019/08/20 08:00 | Karol Drzewiecki v Filip Kolasinski | 7-5,5-7,10-12 |
| ITF M15 Irpin | 2019/08/14 07:30 | Vladyslav Orlov v Filip Kolasinski | 6-1,6-4 |
| ITF M15 Irpin | 2019/08/13 10:20 | Filip Kolasinski v Aleksandr Braynin | 6-4,6-0 |
| ITF M15 Irpin | 2019/08/12 12:00 | Simonas Zukauskas v Filip Kolasinski | 1-6,1-6 |