UFC 63: Hughes vs. Penn was a mixed martial arts event held by the Ultimate Fighting Championship on September 23, 2006. The event, originally subtitled “Hughes vs. St. Pierre,” was scheduled to feature a UFC Welterweight Title match between champion Matt Hughes and Georges St.-Pierre. Nevertheless, a groin injury—which was reported early in August—forced St.-Pierre off the card.
Jens Pulver | Mike Swick | Rashad Evans | Roger Huerta | Matt Hughes | B.J. Penn | Tyson Griffin | David Loiseau | Melvin Guillard | Jorge Gurgel | Eddie Sanchez | Jason Lambert | Joe Lauzon | Gabe Ruediger | Mario Neto | David Lee | Jason Dent | Danny Abbadi