Dallas running back DeMarco Murray is working his way back from a foot injury, but Cowboys coach Jason Garrett called him "very doubtful" for Sunday's game against Cleveland. Murray, who has missed four games with the injury that happened during an Oct. 14 loss to Baltimore, was limited at practice this week and wasn't on the field Friday, NFL Network reported. The second-year pro had said earlier this week that he felt good about his chances of playing Sunday against the Browns. Now he can only hope he's ready for the next game. The Cowboys have a quick turnaround for their Thanksgiving day game against Washington. Murray has rushed for 330 yards and one touchdown this season.