During the Cowboys game against the 49ers, running back Felix Jones played most of the Cowboys game with a separated shoulder according to Brandon George of the Dallas Morning News. Cowboys owner Jerry Jones said Felix Jones wore a harness most of the game in an effort to help him with his separated shoulder. Jerry Jones said he's not sure if Felix Jones will be able to play in the Cowboys' home opener against Washington next week. "Our guys hung in there," Jerry Jones said. "It wasn't pretty in the offensive line and we couldn't run the ball very well." Source: The Red Zone
I totally agree. However, because of what happened in Week 1 against the Jets, I bet he plays unless he's unconscious.