The Eagles' offensive line has been severely affected by injuries, but there could be some relief coming this Sunday against Dallas. Cowboys nose tackle Jay Ratliff missed practice again on Thursday with an ankle injury that he suffered last Sunday against Atlanta.

Ratliff is a rare breed of size and quickness, who is able to be a disruptive force as the nose in the 3-4 at 6-4, 303 pounds - smaller than most typical nose tackles. Ratliff earned his fourth straight Pro Bowl nomination in 2011.

The Ratliff injury isn't the only one worth monitoring for the Cowboys. Starting center Phil Costa missed Thursday's practice with an ankle injury. Ryan Cook would start in his place. Starting running back DeMarco Murray has been sidelined with a foot injury. Starting inside linebacker Dan Connor was a limited participant with a neck injury, but is not a lock to start. Former Eagle Ernie Sims would enter the lineup for Connor.

The only change to the Cowboys' injury report from Wednesday, in fact, is that cornerback Mike Jenkins did not practice with a back injury. Jenkins is a former first-round pick and starter who now plays in subpackages.

Also not practicing for the Cowboys were defensive tackle Sean Lissemore (ankle) and safety Matt Johnson (hamstring).

Wide receiver Dez Bryant was a full participant with a hip injury. Running back Felix Jones, who will start if Murray can't play, was also a full participant with a knee injury.

Make sure to follow us on Twitter @EaglesInsider