Mayen was part of the team's most recent training camp in Rosario, Argentina, and has five international appearances under Rongen. He was also with the team during the Campos Verdes International Tournament in Portugal and a domestic training camp in Sunrise, Fla., in 2008.
He has made 11 appearances and four starts for Chivas USA in 2009, contributing four assists in his first year playing with the first team.
Roster by Position
GOALKEEPERS (3): Sean Johnson (Central Florida; Lilburn, Ga.), Josh Lambo (FC Dallas; Middleton, Wis.), Brian Perk (UCLA; Rancho Santa Margarita, Calif.)
DEFENDERS (6): Gale Agbossoumonde (Miami FC; Syracuse, N.Y.), Kyle Davies (FC Dallas; Danville, Calif.), Aaron Maund (Notre Dame; Dorchester, Mass.), Ike Opara (Wake Forest; Durham, N.C.), Sheanon Williams (Unattached; Boston, Mass.)
MIDFIELDERS (9): Bryan Arguez (Hertha Berlin, Miami), Danny Cruz (Houston Dynamo; Glendale, Ariz.), Mikkel Diskerud (Stabak; Oslo, Norway), Dilly Duka (Rutgers; Montville, N.J.), Jorge Flores (Chivas USA; Anaheim, Calif.), Jared Jeffrey (Club Brugge; Richardson, Texas), Gerson Mayen (Chivas USA; Los Angeles), Brian Ownby (Virginia; Glen Allen, Va.), Dillon Powers (Notre Dame; Plano, Texas), Michael Stephens (UCLA; Naperville, Ill.)
FORWARDS (3): Peri Marosevic (FC Dallas; Rockford, Ill.), Brek Shea (FC Dallas; College Station, Texas), Tony Taylor (Jacksonville; Jacksonville, Fla.)