| Youth Allsvenskan Södra 2021 - Appearances as Referee |  |
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| 13/11/2021 | IF Elfsborg | - | Åtvidabergs FF | 7:0 | - | - | - |
| Youth Allsvenskan Södra 2021 - Appearances as Referee | |
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| 13/11/2021 | IF Elfsborg | - | Åtvidabergs FF | 7:0 | - | - | - |
| Complete name: | Mikołaj Kostrzewa |
| Born: | |
| Place of birth: |
Sweden |
| Nationality: |
Sweden |