UFC 20: Battle for the Gold was a mixed martial arts event held by the Ultimate Fighting Championship on May 7, 1999 at the Boutwell Auditorium in Birmingham, Alabama. The event was seen live on pay per view in the United States, and later released on home video.

UFC 21: Return of the Champions was a mixed martial arts event held by the Ultimate Fighting Championship on July 16, 1999 at the Five Seasons Events Center in Cedar Rapids, Iowa. The event was seen live on pay per view in the United States, and later released on home video.

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.