Felix Jones out, Sean Lee doubtful

IRVING, Texas -- The Dallas Cowboys will not have starting running back Felix Jones for the third consecutive game, while linebacker Sean Lee is listed as doubtful for Sunday's game against the Seahawks.

Jones has a high left ankle sprain and had a walking boot taken off his foot last week, but he has yet to start running. DeMarco Murray will start in his place.

Lee has a dislocated left wrist. Though he's not expected to play, Lee was fitted for a hard cast, but the swelling in the wrist has not subsided enough to allow him to practice. Keith Brooking will surely replace Lee in the starting lineup.

"Are we going to miss Sean? Absolutely," defensive coordinator Rob Ryan said Friday. "He's a tremendous football player. Really, he's a young guy on the come, but these guys are excellent and they're proven veterans."

Lee said he hopes to play and indicated it's up to the Cowboys' medical staff to determine it.

"I'm still working to get this hand better and functional," he said. "But once the doctors let me out there that's when I'll be able to go. We're still trying to get there where I'll be able to play Sunday."

Punter Mat McBriar continues to deal with nerve problems in his left (non-kicking) foot which prevents him from planting when he kicks. McBriar is listed as questionable and did some punting on Friday. McBriar has what team medical officials call drop foot, which prevents a person from lifting his foot. He would have to wear a brace on his lower left leg to keep the foot stable.

If McBriar is unable to play against Seattle, Chris Jones could get elevated from the practice squad to the active roster. The Cowboys might use field goal kicker Dan Bailey on punts. He replaced McBriar in the second half last week at Philadelphia.

Cornerback Mike Jenkins (hamstring) will miss his first game of the season with his injury, suffered last week at Philadelphia. Jenkins has endured a stinger and shoulder injury this season and played through it. But the hamstring is forcing him out for three to four weeks.

Orlando Scandrick starts in Jenkins' place alongside Terence Newman.

Guard Kyle Kosier is questionable with plantar fasciitis in his left foot. Kosier was limited the last two days in practice. If he can't participate, veteran guard Derrick Dockery is scheduled to start at right guard.

Calvin Watkins covers the Cowboys for ESPNDallas.com.