| nickname(s) |  Krefcik |
| position(s) | Field Player (Futsal, Beach Soccer) |
| preferred foot | - |
| height [cm] • weight [kg] | 180 • 73 |
| date of birth [dd/mm/yyyy] | 18/09/1994 |
| place of birth |  Gdynia |
| nationality(ies) | Polish |
| • 12/09/2019 Futsal Men: Squad selected for Visegrad Futsal Tournament 2019 |
| • 27/05/2019 Futsal Men: Squad selected for training camp in Koszalin (2 Jun - 7 Jun) |
| • 26/04/2019 Beach Soccer: Squad selected for training camp in Sztutowo (8 May - 12 May) |
| • 05/04/2019 Beach Soccer: Mikołaj Kreft has replaced injured Jakub Jesionowski in the squad for friendlies against Portugal |
| • 11/10/2018 Futsal Men: Squad selected for friendlies against Serbia |
| • 05/09/2018 Futsal Men: Squad selected for Visegrad Futsal Tournament 2018 |
| • 13/07/2018 Futsal Men: Squad selected for 2018 FISU World University Futsal Championship |