WEC 18: Unfinished Business[1] was an event held on January 13, 2006 at the Tachi Palace in Lemoore, California, United States.

WEC 20: Cinco de Mayhem[3] was an event held on May 5, 2006 at the Tachi Palace in Lemoore, California, United States.

WEC 21: Tapout[4] was an event held on June 15, 2006 at the San Manuel Indian Bingo and Casino in Highland, California.

WEC 22: The Hitmen[5] was an event held on July 8, 2006 at the Tachi Palace in Lemoore, California, United States.

WEC 24: Full Force[7] was an event held on October 12, 2006 at the Tachi Palace in Lemoore, California, United States.