| Poland 1 Liga | 2020/12/22 16:00 | KPS Siedlce v BAS Bialystok | L | 3-2 |
| Club Friendlies | 2020/08/28 14:00 | KPS Siedlce v BAS Bialystok | L | 3-0 |
| Poland 1 Liga | 2021/03/11 19:30 | BAS Bialystok v BKS Bydgoszcz | L | 0-3 |
| Poland 1 Liga | 2021/03/06 17:00 | BAS Bialystok v ASPS Avia Swidnik | L | 1-3 |
| Poland 1 Liga | 2021/03/03 17:00 | BAS Bialystok v Kluczbork | L | 1-3 |
| Poland 1 Liga | 2021/02/06 17:00 | BAS Bialystok v AGH Krakow | L | 1-3 |
| Poland 1 Liga | 2021/02/03 16:00 | Strzelce Opolskie v BAS Bialystok | L | 3-1 |
| Poland 1 Liga | 2021/01/30 17:00 | BAS Bialystok v Olimpia Sulecin | W | 3-1 |
| Poland 1 Liga | 2021/01/15 17:00 | BAS Bialystok v Lechia Tomaszow Mazowiecki | L | 0-3 |
| Poland 1 Liga | 2021/01/09 16:00 | Bielsko-Biala v BAS Bialystok | L | 3-1 |
| Poland 1 Liga | 2021/03/06 16:00 | BKS Bydgoszcz v KPS Siedlce | L | 3-0 |
| Poland 1 Liga | 2021/03/03 16:00 | KPS Siedlce v ASPS Avia Swidnik | L | 1-3 |
| Poland 1 Liga | 2021/02/18 19:30 | KPS Siedlce v Kluczbork | W | 3-1 |
| Poland 1 Liga | 2021/02/06 16:00 | KPS Siedlce v Norwid Czestochowa | W | 3-2 |
| Poland 1 Liga | 2021/02/03 15:30 | AGH Krakow v KPS Siedlce | W | 1-3 |
| Poland 1 Liga | 2021/01/30 16:00 | KPS Siedlce v Strzelce Opolskie | W | 3-0 |
| Poland 1 Liga | 2021/01/14 19:30 | KPS Siedlce v Gwardia Wroclaw | W | 3-2 |
| Poland 1 Liga | 2021/01/09 16:00 | KPS Siedlce v Lechia Tomaszow Mazowiecki | W | 3-0 |