| nickname(s) |  Kowal |
| position(s) | Attacking Midfielder (Right, Central) |
| preferred foot | Right |
| height [cm] • weight [kg] | 169 • 54 |
| date of birth [dd/mm/yyyy] | 22/08/1998 |
| place of birth |  Szczecin |
| nationality(ies) | Polish |
| team | gms |  |
 |
debut date |
| Men's Senior |
0 | 0 | 0 | - |
| Men's Under 21s |
4 | 0 | 1 | 15/11/2019 |
| Men's Under 20s |
3 | 0 | 0 | 06/10/2017 |
| • 05/03/2021 Men's Senior: Squad selected for FIFA World Cup 2022™ qualifiers against Hungary, Andorra and England |
| • 28/10/2020 Men's Under 21s: Players from Polish clubs have been added to the squad for 2021 UEFA Under 21 Championship qualifier against Latvia |
| • 28/09/2020 Men's Under 21s: Players from Polish clubs have been added to the squad for 2021 UEFA Under 21 Championship qualifiers against Serbia and Bulgaria |
| • 25/08/2020 Men's Under 21s: Players from Polish clubs have been added to the squad for 2021 UEFA Under 21 Championship qualifiers against Estonia and Russia |
| • 06/11/2019 Men's Under 21s: Sebastian Kowalczyk has replaced injured Patryk Dziczek in the squad for 2021 UEFA Under 21 Championship qualifier against Bulgaria and friendly against Montenegro |
| • 11/03/2019 Men's Under 20s: Squad selected for Elite League match against England |