RIZIN 48

Jiří Procházka (Czech: [ˈjɪr̝iː ˈproxaːska] ; [ˈjɪrka] ; born October 14, 1992) is a Czech professional mixed martial artist. He currently competes in the Light Heavyweight division of the Ultimate Fighting Championship (UFC), where he is a former UFC Light Heavyweight Champion and the first Czech fighter to win a UFC championship. He was the inaugural Rizin Fighting Federation Light Heavyweight Champion and the inaugural Gladiator Fighting Championship Light Heavyweight Champion. As of April 14, 2026, he is #3 in the Meta UFC light heavyweight rankings.