| Marbello Cup Exhibition Series | 2020/05/07 10:20 | Adam Mlazga v Kamil Gajewski | 4-6,1-6 |
| Marbello Cup Exhibition Series | 2020/05/06 18:30 | Kamil Gajewski v Yann Wojcik | 6-2,7-6 |
| Marbello Cup Exhibition Series | 2020/05/06 14:00 | Kamil Gajewski v Michal Bedra | 6-2,6-3 |
| ITF - M25 - Posen | 2019/08/20 08:00 | Maciej Rajski v Kamil Gajewski | 6-1,6-3 |
| ITF - M25 - Posen | 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 |
| Marbello Cup Exhibition Series | 2020/05/07 08:00 | Makary Adamek v Mateusz Terczynski | 6-7,3-6 |
| Marbello Cup Exhibition Series | 2020/05/06 17:05 | Mateusz Terczynski v Michal Bedra | 6-2,6-2 |
| Marbello Cup Exhibition Series | 2020/05/06 12:50 | Mateusz Terczynski v Adam Mlazga | 6-3,6-1 |
| ITF - M15 - Sharm El Sheikh | 2020/02/17 09:00 | Moritz Trocker v Mateusz Terczynski | 6-4,6-3 |
| ITF - M15 - Sharm El Sheikh | 2020/02/16 11:00 | Mateusz Terczynski v Alexander Ovcharov | 6-2,3-6,10-3 |
| ITF - M15 - Sharm El Sheikh | 2020/02/09 12:00 | Mateusz Terczynski v Aleksei Khomich | 5-7,7-6,8-10 |
| ITF - M15 - Manacor | 2020/01/12 10:00 | Ugo Blanchet v Mateusz Terczynski | 6-4,6-3 |
| ITF - M15 - Manacor | 2020/01/06 10:30 | Mateusz Terczynski v Juan P Canas Garcia | 3-6,6-2,5-10 |