WEC 2: Clash of the Titans was a mixed martial arts event held on October 4, 2001 at the Tachi Palace Hotel & Casino in Lemoore, California. WEC 2's main event was a fight between Gan McGee and Ron Faircloth.

WEC 1: Princes of Pain was a mixed martial arts event held on June 30, 2001 at the Tachi Palace Hotel & Casino in Lemoore, California. WEC 1's main event was a fight between Dan Severn and Travis Fulton.

UFC 45: Revolution was a mixed martial arts event held by the Ultimate Fighting Championship at the Mohegan Sun Casino in Uncasville, Connecticut. This event marked the 10th anniversary of the UFC and to celebrate the anniversary the UFC inaugurated its Hall of Fame, with Royce Gracie and Ken Shamrock as the first inductees.

Bellator I was a mixed martial arts event by Bellator Fighting Championships. The event took place on Friday, April 3, 2009 at the Seminole Hard Rock Hotel & Casino in Hollywood, Florida. It was broadcast nationally in the U.S. via tape-delay the following night on Saturday, April 4, 2009 through an exclusive television agreement with ESPN Deportes. The event featured quarter-final tournament bouts of the 2009 Featherweight (145 lbs) and Lightweight (155 lbs) Tournaments, along with a number of non-tournament bouts to be held in the organization's other weight divisions. All bouts were contested under the Unified Rules of Mixed Martial Arts.