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Edgar Castillo, Stuart Holden, Jose Francisco Torres, and Ricardo Clark were called in. Clint Dempsey, Steve Cherundolo and Chad Marshall have been sent home.

The full squad:

GOALKEEPERS: Brad Guzan (Aston Villa), Marcus Hahnemann (Wolverhampton), Troy Perkins (Valerenga)

DEFENDERS: Carlos Bocanegra (Rennes), Jonathan Bornstein (Chivas USA), Edgar Castillo (Tigres), Jimmy Conrad (Kansas City Wizards), Clarence Goodson (IK Start), Frankie Hejduk (Columbus Crew), Heath Pearce (FC Dallas), Jonathan Spector (West Ham)

MIDFIELDERS: Michael Bradley (Borussia Mönchengladbach), Ricardo Clark (Houston Dynamo), Benny Feilhaber (AGF Aarhus), Stuart Holden (Houston Dynamo), Sacha Kljestan (Chivas USA), Dax McCarty (FC Dallas), Robbie Rogers (Columbus Crew), José Francisco Torres (Pachuca)

FORWARDS: Jozy Altidore (Hull City), Conor Casey (Colorado Rapids), Jeff Cunningham (FC Dallas), Eddie Johnson (Fulham)