| Ekstraklasa 2019/2020 Championship - Appearances as Assistant | ||||
| 24/06/2020 | Lech Poznań | - | Pogoń Szczecin | 0:0 |
| 05/07/2020 | Piast Gliwice | - | Śląsk Wrocław | 1:0 |
| 15/07/2020 | KS Cracovia | - | Lech Poznań | 1:2 |
| Ekstraklasa 2019/2020 Championship - Appearances as Assistant | ||||
| 24/06/2020 | Lech Poznań | - | Pogoń Szczecin | 0:0 |
| 05/07/2020 | Piast Gliwice | - | Śląsk Wrocław | 1:0 |
| 15/07/2020 | KS Cracovia | - | Lech Poznań | 1:2 |
| Complete name: | Radosław Siejka |
| Born: | 17/09/1974 |
| Place of birth: |
Poland |
| Nationality: |
Poland |