Cowboys' Ratliff (groin) out against Bengals

Dallas Cowboys nose tackle Jay Ratliff will not play Sunday at Cincinnati, missing his third straight game because of a groin injury.

IRVING, Texas -- Dallas Cowboys nose tackle Jay Ratliff will not play Sunday at Cincinnati, missing his third straight game because of a groin injury.

It will be the seventh game Ratliff has missed this season due to injury. He missed the first four games of the season recovering from a high ankle sprain suffered in his lone preseason game. He missed all of the offseason program and most of training camp with plantar fasciitis.

He has not played since Nov. 18 vs. Cleveland.

In six games, Ratliff has 25 tackles and 10 quarterback pressures, but he has yet to record a sack and it is looking like his sack total will decrease for the fifth straight season.

Josh Brent will continue in Ratliff's role in the base defense. He has 35 tackles, five pressures and 1.5 sacks on the season.

Running back DeMarco Murray was limited for the second straight day in practice with a foot injury and is listed as probable. Nate Livings practiced fully on Friday after missing Thursday's practice with a sore knee and is also listed as probable.

Wide receiver Miles Austin (hip), center Ryan Cook (knee), running back Felix Jones (knee), defensive end Sean Lissemore (ankle), left tackle Tyron Smith (knee), linebacker Anthony Spencer (calf) and fullback Lawrence Vickers (knee) are probable.

Safety Charlie Peprah (foot) and cornerback Orlando Scandrick (hand) are out.