Here is the roster that Porter will use to qualify for the Olympics, with the exception of one player who will be added next weekROSTERGOALKEEPERS: Bill Hamid (D.C. United), Sean Johnson (Chicago Fire)DEFENDERS: Josh Gatt (Molde), Perry Kitchen (D.C. United), Ike Opara (San Jose Earthquakes), Kofi Sarkodie (Houston Dynamo), Zarek Valentin (Montreal Impact), Jorge Villafaña (Chivas USA)MIDFIELDERS: Freddy Adu (Philadelphia Union), Joe Corona (Club Tijuana), Mix Diskerud (Gent), Jared Jeffrey (Mainz), Amobi Okugo (Philadelphia Union), Michael Stephens (LA Galaxy)FORWARDS: Juan Agudelo (New York Red Bulls), Terrence Boyd (Borussia Dortmund), Teal Bunbury (Sporting Kansas City), Joe Gyau (Hoffenheim), Brek Shea (FC Dallas)