The Dallas Cowboys will already be without starting middle linebacker Sean Lee when they face the first-place New York Giants at home on Sunday, and they'll also likely play without starting running back DeMarco Murray, according to ESPN.

Murray won't practice Wednesday and was listed as doubtful on the team's injury report for the week as he's recovering from a sprained right foot. Murray suffered the injury in the Cowboys' loss against the Ravens 10 days ago.

Head coach Jason Garrett said Wednesday morning the team is playing it day by day with Murray:

"Hopefully he's just progressing," Garrett said . "He's moving around better, he's in the meetings and we'll just see where he is. We don't anticipate him practicing (Wednesday) and we'll see where he is going forward."

Murray leads the team in rushing with 330 yards on 75 carries and a touchdown. Felix Jones would start in his place.

Dallas also made a few roster moves. Along with Sean Lee, punter Chris Jones was moved to IR. That means Brian Moorman will be the permanent punter for 2012. To fill the open spots on the roster, the Cowboys officially signed safety Charlie Peprah and also signed veteran linebacker Ernie Sims.

... Ernie Sims, a former Top 10 draft pick of the Lions back in 2006. Sims spent last season with the Colts and started four of 13 games played. He had 32 tackles in Indy, following a 55-tackle season with the Eagles. He started his career with the Lions but never lived up to the expectations of being a first-round pick.