| Poland III Liga | 2021/08/07 14:00 | Legionovia Legionowo v Jagiellonia Bialystok II | L | 2-0 |
| Poland III Liga | 2021/06/16 15:00 | Jagiellonia Bialystok II v Legionovia Legionowo | L | 1-5 |
| Poland III Liga | 2021/06/11 15:00 | Pogon Grodzisk Mazowiecki v Jagiellonia Bialystok II | L | 6-0 |
| Poland III Liga | 2021/06/08 15:00 | Mlks Znicz Biala Piska v Jagiellonia Bialystok II | L | 6-2 |
| Poland III Liga | 2021/06/05 10:00 | Jagiellonia Bialystok II v Legia Warsaw II | L | 1-4 |
| Poland III Liga | 2021/05/29 15:00 | MKS Swit Nowy Dwor Mazowiecki v Jagiellonia Bialystok II | L | 1-0 |
| Poland III Liga | 2021/05/22 11:00 | Jagiellonia Bialystok II v Polonia Warsaw | L | 0-2 |
| Poland III Liga | 2021/05/15 10:00 | Jagiellonia Bialystok II v Unia Skierniewice | L | 1-2 |
| Poland III Liga | 2021/08/07 15:00 | MLKS Wissa Szczuczyn v Blonianka Blonie | W | 3-1 |