MMA & Boxing · KSW · 2026

Date & time

19 Sept 2026, 19:00

Round

8

Venue

Home Credit Arena

Location

Liberec, Czechia

KSW returns to the Czech Republic for XTB KSW 121, bringing an interim heavyweight championship fight to Liberec as Štefan Vojčák faces Marcin Wójcik at Home Credit Arena. Originally scheduled to challenge reigning champion Phil De Fries, top-ranked contender Vojčák instead meets Wójcik after an injury forced De Fries out of the event, turning the replacement matchup into a battle for interim gold. Vojčák enters with a 10-2 record and nine stoppage victories, while the vastly experienced Wójcik brings a 22-11 record and considerable finishing power of his own. The card also features former middleweight title challengers Michał Michalski and Radosław Paczuski in the co-main event, alongside several ranked matchups that give KSW’s latest visit to Liberec significant implications across multiple divisions.