| Ekstraklasa 2023/2024 - Appearances as Assistant | ||||
| 05/08/2023 | Górnik Zabrze | - | Piast Gliwice | 0:0 |
| 17/09/2023 | Jagiellonia Białystok | - | Radomiak Radom | 3:2 |
| 16/12/2023 | Widzew Łódź | - | Pogoń Szczecin | 1:2 |
| 19/05/2024 | Widzew Łódź | - | Lech Poznań | 1:1 |
| Ekstraklasa 2023/2024 - Appearances as Assistant | ||||
| 05/08/2023 | Górnik Zabrze | - | Piast Gliwice | 0:0 |
| 17/09/2023 | Jagiellonia Białystok | - | Radomiak Radom | 3:2 |
| 16/12/2023 | Widzew Łódź | - | Pogoń Szczecin | 1:2 |
| 19/05/2024 | Widzew Łódź | - | Lech Poznań | 1:1 |
| Complete name: | Slawomir Kowalewski |
| Born: | |
| Place of birth: |
Poland |
| Nationality: |
Poland |