WEC 20: Cinco de Mayhem was a mixed martial arts event held by World Extreme Cagefighting that took place on May 5, 2006 at Tachi Palace Hotel & Casino in Lemoore, California. WEC 20's main event was a heavyweight bout between Brian Olsen and Mike Kyle.

WEC 23: Hot August Fights was a mixed martial arts event held on August 17, 2006. WEC 23's main event was a championship fight for the WEC Light Heavyweight Title between champion Lodune Sincaid and challenger Doug Marshall.

WEC 13: Heavyweight Explosion was a mixed martial arts event promoted by World Extreme Cagefighting on January 22nd, 2005 at the Tachi Palace Hotel & Casino in Lemoore, California. The card featured a 4 man Heavyweight Tournament featuring Brandon Vera as well as single fights which saw the likes of Jason "The Punisher" Lambert, Brad Imes, and MMA legend "Mr. International" Shonie Carter compete.

WEC 12: Halloween Fury 3 was a mixed martial arts event promoted by World Extreme Cagefighting on October 21st, 2004 at the Tachi Palace Hotel & Casino in Lemoore, California. The card featured many future superstars such as Jason "The Punisher" Lambert, Nate Diaz, Brad Imes, Chris "Lights Out" Lytle, "The Sandman" James Irvin, Joe "Diesel" Riggs, Chael Sonnen, and MMA legend "Mr. International" Shonie Carter. The main event saw Doug Marshall take on Carlos Garcia.