With Phil Costa already out and Ryan Cook doubtful after missing a week of practice, the Dallas Cowboys will likely turn to right guard Mackenzy Bernadeau at center Sunday versus the Cleveland Browns. Todd Archer of ESPN Dallas writes that Bernadeau is confident in his ability to play the position despite this being his first career start at center:

"I always embrace the challenge. I'm excited even though I haven't played in a game I've done it in the preseason and it's something I'm confident with. It's new, so it's exciting."

Derrick Dockery will take Bernadeau's spot at right guard if Cook can't go. Bernadeau has been taking the bulk of snaps at center this week as Costa nurses an ankle injury and Cook recovers from a knee issue.

Also not practicing, once again, was running back DeMarco Murray, who was listed as doubtful for the Browns match. With a quick turnaround before the Thanksgiving Game just four days later, it's likely that Murray will not play against the Redskins if he misses Sunday's contest against Cleveland.

Kickoff for Sunday's game from Cowboy Stadium is set for noon CT and is being broadcast on CBS.