WEC 18: Unfinished Business was a mixed martial arts event promoted by World Extreme Cagefighting on January 13, 2006 at the Tachi Palace Hotel & Casino in Lemoore, California.

WEC 16: Clash of the Titans 2 was a mixed martial arts event promoted by World Extreme Cagefighting on August 18th, 2005 at the Tachi Palace Hotel & Casino in Lemoore, California. The main event saw Ron Waterman take on Ricco Rodriguez for the WEC Super Heavyweight Championship.

WEC 15: Judgment Day was a mixed martial arts event promoted by World Extreme Cagefighting on May 19th 2005 at the Tachi Palace Hotel & Casino in Lemoore, California. The card featured the likes of Joe Riggs, Chris Lytle and James Irvin compete.

WEC 14: Vengeance was a mixed martial arts event promoted by World Extreme Cagefighting on March 17th, 2005 at the Tachi Palace Hotel & Casino in Lemoore, California.[1] The Main Event saw John Polakowski take on Olaf Alfonso.

WEC 11: Evolution was a mixed martial arts event promoted by World Extreme Cagefighting on August 20, 2004 at the Tachi Palace Hotel & Casino in Lemoore, California. The main event saw Shonie Carter take on Jason Biswell.