KSW has added a huge bout to the Saturday, December 19, 2020, KSW 57 card adding Roman Szymanski vs Marian Ziolkowski for the vacant KSW lightweight championship. The title was made vacant with the departure of Mateusz Gamrot to the UFC. This will be the third title fight on an already stacked card. The main event features Phil de Fries defending his heavyweight title against Michal Kita. The KSW 57 will be shown worldwide on KSWTV and the KSW app on your phone.