A scan on the problem in LA on Saturday revealed a torn meniscus in his right knee which requires surgery and means Feilhaber is now facing a race to be fit for the start of Derby's pre-season training programme this summer.
It is the latest injury blow for the player, who made just one start and 10 appearances in the Rams' dismal Premier League campaign following his arrival from German side Hamburg last July.
Derby winger Eddie Lewis is in the American side and he will go up against Fabio Capello's Three Lions side at Wembley on Wednesday night.




