Dallas Cowboys' Sam Williams Out for Season with Torn ACL

Defensive end Sam Williams' knee injury during training camp confirms significant setback for Cowboys' defensive line

Williams suffered the injury during a special teams drill and was carted off the field.
The 25-year-old defensive end was expected to play a larger role following the departure of key players.
Williams has 8.5 sacks in his first two NFL seasons and was third on the team in sacks last year.
Rookie Marshawn Kneeland and other unproven players will need to step up in Williams' absence.
The Cowboys may need to explore free-agent options to address the depth issue at defensive end.