Midfielder Wilmer Lopez, a key figure in Costa Rica’s success against the United States in World Cup qualifying, is out of the USA-Costa Rica game April 25 in Kansas City. Lopez suffered a knee injury playing with his club team, Alajuela, and won’t be back in time for the qualifier. He injured himself in a collision with former MLS striker Roy Myers during the Alajuala-Saprissa derby April 1. Coach Alexander Guimaraes had called up 22 players, including Lopez, for the U.S. game. The one newcomer in the Tico squad is defender Robert Arias of Heredia. Notable absentees in Guimaraes’ squad are Jafet Soto (UAG, Mexico) and Alexander Madrigal (La Piedad, Mexico). The Costa Rica squad: Goalies: Erick Lonnis (Saprissa), Lester Morgan (Heredia), Alvaro Mesen (Alajuela). Defenders: Robert Arias (Heredia), Carlos Castro (Alajuela), Pablo Chinchilla (Alajuela), Jervis Drummond (Saprissa), Luis Marin (Alajuela), Gilberto Martinez (Saprissa), Reynaldo Parks (UAG, Mexico), Harold Wallace (Alajuela). Midfielders: Steven Bryce (Alajuela), Rolando Fonseca (Saprissa), Wilmer Lopez (Alajuela), Mauricio Solis (Alajuela), Rodrigo Cordero (Heredia). Strikers: Minor Diaz (Heredia), Ronald Gomez (OFI Crete, Greece), Hernan Medford (Necaxa, Mexico), William Sunsing (New England Revolution, USA), Paulo Cesar Wanchope (Manchester City, England).