Dallas Cowboys rookie linebacker DeMarvion Overshown is feared to have a torn ACL. 

Overshown injured his left knee in the first quarter of the team's 22-14 loss to Seattle. He walked off the field and was taken to the locker room on a cart.

According to Michael Gehlken of the Dallas Morning News, two people familiar with situation believe he may have torn his ACL but an MRI will be needed to determine the extent of the injury.

Overshown is a third round pick from Texas who has been a bright spot in training camp.

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