Jurgen Klinsmann will not call on any replacements for the midfielder and left back, while Shea could return to U.S. camp if he responds to treatment.
U.S. Soccer announced Monday that midfielder Maurice Edu (sports hernia) and left back Corey Ashe (groin) have had to withdraw from camp, while Brek Shea will go to Dallas to received treatment for a calf strain with an eye on returning at some point before the end of the current stretch that includes two friendlies and three World Cup qualifiers. No replacements are being named in their places, leaving Jurgen Klinsmann with a 20-man roster for Wednesday's match against Belgium.
Edu was diagnosed with the injury by Stoke City's doctors following the conclusion of his loan to Turkish club Bursaspor, according to U.S. Soccer. Ashe suffered his injury in the first half of the Houston Dynamo's 1-1 draw with Sporting Kansas City on Sunday. He had only been called in for Wednesday's friendly against Belgium, because both left backs Edgar Castillo (Copa Libertadores) and Fabian Johnson (Bundesliga relegation playoffs) were serving club commitments. It was his first call to the national team of his career.
If Shea responds to treatment, he will be able to link back up with the national team, but not until he is "fit for full training" according to a U.S. Soccer release.
The USA is slated to play Belgium at Cleveland's FirstEnergy Stadium prior to Saturday's Centennial Celebration match against Germany at Washington, D.C.'s RFK Stadium. Those games precede World Cup qualifiers against Jamaica, Panama and Honduras.