DuJuan Harris is expected to get some snaps at running back against the Buccaneers after the 49ers promoted him from the practice squad on Saturday. To make room they released defensive lineman Taylor Hart, who has been inactive for all but one game this season.
Harris is one of three runners likely to fill in for Carlos Hyde, who will miss Sunday's game with a shoulder injury. Hyde, the league's 11th-leading rusher, was injured in the third quarter of the recent loss to Buffalo but said he expects only to miss one game. The 49ers have a bye next week.