| Poland IV Liga | 2021/06/23 16:00 | Pilica Bialobrzegi v Mlawianka Mlawa | W | 5-2 |
| 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 | 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 | 2021/05/12 16:00 | Jagiellonia Bialystok II v Znicz Biala Piska | W | 3-2 |