UFC 327: Carlos Ulberg knocks out Jiri Prochazka for vacant light heavyweight title.

At UFC 327, Carlos Ulberg claimed the light heavyweight title with a knockout victory over Jiri Prochazka. Despite suffering a severe knee injury early in the fight, Ulberg recovered and landed a fight-ending left hook, knocking Prochazka unconscious. Prochazka later admitted he hesitated, feeling mercy for Ulberg's condition, which he said cost him the fight.