| nickname(s) |  Grunia |
| position(s) | Field Player (Beach Soccer) |
| preferred foot | - |
| height [cm] • weight [kg] | - |
| date of birth [dd/mm/yyyy] | 29/08/1990 |
| place of birth | - |
| nationality(ies) |  Polish |
| • 20/09/2023 Beach Soccer: Mateusz Gruszewski has replaced Witold Ziober in the squad for Euro Beach Soccer League 2023 - Superfinal |
| • 30/06/2023 Beach Soccer: Squad selected for FIFA Beach Soccer World Cup 2023 - Europe Qualifier Baku |
| • 31/05/2019 Beach Soccer: Squad selected for friendlies against Greece |