| Group 5 | 15/11/2019 | Bulgaria [U21] | - | Poland [U21] | 3:0 | ||||
| Group 5 | 04/09/2020 | Estonia [U21] | - | Poland [U21] | 0:6 |  |
|||
| Group 5 | 17/11/2020 | Poland [U21] | - | Latvia [U21] | 3:1 |
| Group 5 | 15/11/2019 | Bulgaria [U21] | - | Poland [U21] | 3:0 | ||||
| Group 5 | 04/09/2020 | Estonia [U21] | - | Poland [U21] | 0:6 | |
|||
| Group 5 | 17/11/2020 | Poland [U21] | - | Latvia [U21] | 3:1 |
| Sebastian Oskar Kowalczyk | |
| Born: | 22.08.1998 |
| Place of birth: |
Szczecin, 
Poland |
| Nationality: |
Poland
|
| Height: | 170 cm |
| Weight: | 60 kg |
| Position(s): | Offensive Midfielder Left Winger |
| Foot: | right |