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.

Cast

Mike Kyle

Self

Poppies Martinez

Self

Glover Teixeira

Self

Eddie Wineland

Self

Antonio Banuelos

Self

Rob McCullough

Self

Nate Diaz

Self

Fernando Gonzalez

Self

Keith Berry

Self