Austin came down hard in the back of the end zone on the opening drive of the game when he took a hit from Washington Redskins linebacker London Fletcher on an incomplete pass in Thursday's loss. Fletcher also knocked Austin down on an earlier incomplete pass.
Austin doesn't want to miss an opportunity to face an Eagles secondary that has been torched in the five weeks since defensive coordinator Juan Castillo was shown the door and replaced by Todd Bowles.
In other injury news, the Cowboys hope running back DeMarco Murray can return to practice Wednesday, but ESPN reported he's "not guaranteed" to play Sunday. Murray has been out of action since Week 7 with a midfoot sprain.
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