The premier mixed marital arts event in the world returns to Atlantic City for UFC 41: Onslaught. The Heavyweight Championship is on the line as champ Ricco Rodriguez makes his first title defence against 6'8'', 260 pound Tim Sylvia. in the co-main event, UFC legend Tank Abbott returns to take on rising young heavyweight Frank Mir. The undercard is highlighted by a title bout to crown a new Lightweight Champion. BJ Penn and Caol Uno battle it out for the vacant Lightweight belt. Penn wants to prove he is the best. Uno wants redemption. Other feature fights on the card include Phil Baroni versus Matt Lindland in a true grudge match, and Vladimir Matyushenko versus Pedro Rizzo in a heavyweight showdown. It's another huge night of fights from the most intense, full-contact even in sports today - The Ultimate Fighting Championship.