CHICAGO -- Union defender Auston Trusty has replaced Fulham's Marlon Fossey on the U.S. roster for the Under-20 World Cup.
The U.S. Soccer Federation said Wednesday that Fossey arrived at training camp with a groin injury.
Trusty will join his Union teammate Derrick Jones, who made the original cut. Jones was the first active Union player to participate in the U-20 World Cup. Trusty will be the second.
The Americans open the tournament in South Korea against Ecuador on Monday, play Senegal three days later and Saudi Arabia on May 28.
The revised roster:
Goalkeepers: Jonathan Klinsmann (California), J.T. Marcinkowski (Georgetown), Brady Scott (De Anza Force)
Defenders: Danny Acosta (Real Salt Lake), Cameron Carter-Vickers (Tottenham, England), Justen Glad (Real Salt Lake), Aaron Herrera (New Mexico), Erik Palmer-Brown (Sporting Kansas City), Tommy Redding (Orlando City), Auston Trusty (Philadelphia)
Midfielders: Tyler Adams (New York Red Bulls), Luca De La Torre (Fulham, England), Derrick Jones (Philadelphia Union), Eryk Williamson (Maryland), Gedion Zelalem (Arsenal, England)
Forwards: Jeremy Ebobisse (Portland), Lagos Kunga (Atlanta United), Brooks Lennon (Real Salt Lake), Emmanuel Sabbi (no club), Josh Sargent (St. Louis Scott Gallagher Missouri), Sebastian Saucedo (Real Salt Lake)