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.

UFC 44: Undisputed was a mixed martial arts event held by the Ultimate Fighting Championship at the Mandalay Bay Events Center on the Las Vegas Strip in Paradise, Nevada. Headlining the card was a light heavyweight championship unification bout between Tito Ortiz and Randy Couture.

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 28: High Stakes was a mixed martial arts event held by the Ultimate Fighting Championship on November 17, 2000 at the Trump Taj Mahal in Atlantic City, New Jersey

UFC 41: Onslaught was a mixed martial arts event held by the Ultimate Fighting Championship at the Boardwalk Hall in Atlantic City, New Jersey. UFC 41 featured two championship bouts, a Heavyweight Championship Bout between Ricco Rodriguez and Tim Sylvia, and a Lightweight Championship Bout between BJ Penn and Caol Uno. The event also marked the return of Tank Abbott to the UFC

UFC 39: The Warriors Return was a mixed martial arts event held by the Ultimate Fighting Championship on September 27, 2002, at the Mohegan Sun Arena in Uncasville, Connecticut. The event was broadcast live on pay per view in the United States, and was the first UFC event to be released on DVD.

Pride Total Elimination 2 was a mixed martial arts event held by Pride Fighting Championships. This event consisted of the first round of the 2004 Heavyweight Grand Prix. It took place on April 25th, 2004, at the Saitama Super Arena in Saitama, Japan.

PRIDE 27: Inferno was a mixed martial arts event held by the PRIDE Fighting Championships. The event took place at the Osaka Castle Hall on February 1st, 2004.