Juarez, who served as a staff coach for the U.S. Soccer Federation since 1989, was a teammate of Vasquez's at Cal State L.A. Juarez hired Vasquez as an assistant at Cal Poly Pomona, where Juarez coached its men's and women's teams 1997-2000, and with the WUSA's San Diego Spirit, which Juarez coached in 2000-02. Juarez was most recently technical director Claremont Stars youth club.
Theslof joins Chivas USA after having served with Vasquez on Juergen Klinsmann's staff at FC Bayern Munich as an assistant coach and international scout in 2008-09. Theslof served as the head coach and general manager for the Orange County Blue Star of the Premier Development League from 2002-2007.
Goalkeeper coach Gonzalez, a native of Argentina who played for Rosario, served as the goalkeeper coach for the Colorado Rapids in 2000-2003.
Llamosa returns for his second season as an assistant coach for Chivas USA. The Colombian-born Llamosa played in MLS in 1997-2007, including his final two seasons with Chivas USA. He made 29 appearances for the USA after gaining U.S. citizenship in 1998. He won two MLS Cups (1997, 1999) with D.C. United.