Cowboys right guard Zack Martin left in the second half with a knee injury against the Eagles on Sunday.
The four-time Pro Bowler has been battling a knee issue all season.
Philadelphia running back Corey Clement injured his right knee when he was stopped for a 4-yard loss late in the first quarter and didn't return to the overtime loss. Eagles defensive end Josh Sweat left in the first half with an ankle injury and didn't return.
Buffalo was down to third-string running back Marcus Murphy after LeSean McCoy was sidelined by a hamstring injury in the first quarter and Chris Ivory hurt his ankle in the third quarter of the loss to the Jets.