Jack Della Maddalena

About Jack Della Maddalena

Giacomo "Jack" Della Maddalena (born 10 September 1996), also known by his initials JDM, is an Australian professional mixed martial artist. He currently competes in the Welterweight division of the Ultimate Fighting Championship (UFC), where he is the former UFC Welterweight Champion. As of 5 May 2026, he is #4 in the Meta UFC welterweight rankings.

Bio summary from Wikipedia.