Stadium: Court 2 Round: 54 Ground: Clay
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2019/08/06 12:00 | Gajewski, Kamil v Aliaksandr Liaonenka | 6-7,2-6 |
| ITF - M15 Sharm El Sheikh | 2019/04/08 09:00 | Gajewski, Kamil v Bachmaier, Philip | 3-6,2-6 |
| ITF M15 Loule | 2019/03/05 14:30 | Juan Bautista Otegui v Gajewski, Kamil | 6-2,7-5 |
| ITF Poland F6 | 2018/08/07 08:00 | Matuszewski, Piotr v Gajewski, Kamil | 6-3,4-6,6-4 |
| Challenger Sopot Qual | 2018/07/28 10:40 | Haerteis, Johannes v Gajewski, Kamil | 6-3,6-2 |
| ITF Poland F4 | 2018/05/21 07:00 | Gajewski, Kamil v Lahky, Nikolas | 6-3,6-7,1-6 |
| ITF Poland F1 | 2018/04/28 10:30 | Andrzejczak, Bartlomiej v Gajewski, Kamil | 3-6,1-6 |
| ITF Poland F9 | 2017/08/15 12:00 | Smirnov, Artem v Gajewski, Kamil | 6-1,6-4 |
| ITF M15 Las Palmas | 2019/04/29 08:30 | Mazon-Hernandez, Rafael v Prehn, Noah | 6-1,6-7,10-2 |
| ITF - M15 Antalya | 2019/04/22 07:00 | Luria, Emmanuel v Prehn, Noah | 6-1,6-4 |
| ITF - M15 Antalya | 2019/04/01 07:00 | Grigoriy Lomakin v Prehn, Noah | 6-1,6-0 |
| ITF Turkey F34 | 2018/10/27 07:00 | Prehn, Noah v Golding, Joshua | 5-7,6-2,3-6 |
| ITF Turkey F31 | 2018/10/06 07:00 | Louroi Martinez v Prehn, Noah | 6-1,6-1 |
| ITF Turkey F30 | 2018/09/30 07:00 | Prehn, Noah v Walder, Jim | 3-6,5-7 |
| ITF Spain F27 | 2018/09/10 08:30 | Feitt, Franco v Prehn, Noah | 4-6,6-1,6-0 |
| ITF Netherlands F3 | 2018/07/07 07:30 | Collins, Sean v Prehn, Noah | 6-2,6-4 |