Matchup: BJ Penn (6-1-1) vs. Matt Hughes (35-3-0)
Date: January 31, 2004
Location: Las Vegas, Nevada
Recap: Rising in weight from 155 pounds to 170 to challenge a man considered to be one of the top pound for pound fighters in the world, BJ Penn was seen by most to be committing athletic suicide against Matt Hughes, who was making the sixth defense of his title. Someone forgot to tell Penn though, who, in one of the sport's most memorable moments, fulfilled all of his exceptional promise in a mere four minutes and 39 seconds as he submitted Hughes in the first round.
Outcome: Penn by submission, Round 1