ASHBURN, Va. -- Washington Redskins second-round draft pick Jarvis Jenkins is out for the year with a torn ACL.

Jenkins received the news Friday, a day after he injured his right knee in the first quarter of a 34-31 loss to the Baltimore Ravens.

The injury is a significant blow to a Redskins' defense seeking to improve after ranking next-to-last in yards allowed in the NFL in 2010.

The defensive end from Clemson had a strong training camp and was slated to be major part of the defensive line rotation -- and possibly challenge Adam Carriker for a starting job.