ASHBURN, Va. -- Washington Redskins linebacker Reuben Foster suffered a season-ending tear of the anterior cruciate ligament in his left knee Monday, a source told ESPN's Adam Schefter.
He was injured on the third snap of the team's first organized team activity session and was carted off the field. He later underwent an MRI.
Redskins coach Jay Gruden said Foster stepped on the foot of offensive lineman Tyler Catalina as he rushed a gap at three-quarters speed.
When Foster was on the ground, he was surrounded by multiple team officials, including president Bruce Allen and Gruden.