The Cowboys expect Felix Jones to return Sunday after a four-game absence, but not as the team's primary running back. Dallas owner/general manager Jerry Jones said Tuesday that rookie DeMarco Murray would continue to get the bulk of the carries. "One thing that comes to my mind is that Murray looks like the more he carries, the more effective he gets," Jerry Jones said on KRLD-FM. "You think of that theoretically about a workhorse running back, that they get better as the game goes along. "On the other hand, Felix -- and this is not negative in any way -- but Felix has always been a guy that looks like the best way for him to be his best is to inject him in spots. So we may have a guy here in Murray and we may have a guy here in Felix who can step in there 12, 13 times a ballgame and really have a chance to break it." Murray, a third-round draft pick, has rushed for 601 yards in Felix Jones' absence, setting a franchise record for a four-game span while the Cowboys went 3-1.