Strikeforce: Diaz vs. Cyborg, was a mixed martial arts event that was held by Strikeforce on January 29, 2011 at the HP Pavilion in San Jose, California, United States.

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.