| Freundschaftsspiele | 2020/08/28 14:00 | KPS Siedlce v BAS Bialystok | W | 3-0 |
| Polen - 1. Liga | 2020/12/19 16:00 | MCKiS Jaworzno v KPS Siedlce | W | 0-3 |
| Polen - 1. Liga | 2020/12/09 17:00 | Lechia Tomaszow Mazowiecki v KPS Siedlce | W | 1-3 |
| Polen - 1. Liga | 2020/12/05 17:00 | LUK Lublin v KPS Siedlce | L | 3-0 |
| Polen - 1. Liga | 2020/11/08 16:30 | Gwardia Wroclaw v KPS Siedlce | L | 3-1 |
| Polen - 1. Liga | 2020/10/07 16:00 | Bielsko-Biala v KPS Siedlce | L | 3-1 |
| Freundschaftsspiele | 2020/09/04 17:00 | KPS Siedlce v ASPS Avia Swidnik | W | 3-0 |
| Freundschaftsspiele | 2020/08/29 11:00 | KPS Siedlce v Lechia Tomaszow Mazowiecki | W | 3-2 |
| Freundschaftsspiele | 2020/08/28 14:00 | KPS Siedlce v BAS Bialystok | W | 3-0 |
| Polen - 1. Liga | 2020/12/09 17:00 | BAS Bialystok v Norwid Czestochowa | L | 0-3 |
| Polen - 1. Liga | 2020/12/05 17:00 | Chemik Bydgoszcz v BAS Bialystok | L | 3-1 |
| Polen - 1. Liga | 2020/12/05 15:00 | BKS Bydgoszcz v BAS Bialystok | L | 3-1 |
| Polen - 1. Liga | 2020/12/02 17:00 | Kluczbork v BAS Bialystok | L | 3-2 |
| Polen - 1. Liga | 2020/11/25 17:00 | BAS Bialystok v Strzelce Opolskie | L | 1-3 |
| Polen - 1. Liga | 2020/10/29 19:30 | AGH Krakow v BAS Bialystok | W | 2-3 |
| Polen - 1. Liga | 2020/10/08 15:30 | BAS Bialystok v Gwardia Wroclaw | L | 0-3 |
| Polen - 1. Liga | 2020/10/04 18:30 | Lechia Tomaszow Mazowiecki v BAS Bialystok | L | 3-2 |