By Peter Gleason
The Redskins will battle the Cowboys tomorrow at Fed-Ex without their best defensive lineman.
According to The Team 980, defensive end Jonathan Allen has been ruled out.
Allen suffered an MCL sprain in the opener, after playing just seven snaps.
Losing the 2017 first-rounder for any amount of time is a major blow for a team that also found out this week that second-year running back Derrius Guice would miss time after knee surgery.