El Clasico forward Lionel Messi was injured during Barcelona on Sunday . Argentina star is in Washington for Saturday 's friendly against El Salvador . Messi sat out training on Friday despite an earlier scan clearing him to play .
Barcelona forward Lionel Messi was injured during El Clasico on Sunday . Argentina star is in Washington for Saturday 's friendly against El Salvador . Messi sat out training on Friday despite an earlier scan clearing him to play .