SANTA CLARA -- Rookie running back Mike Davis, who broke his hand in the 49ers' first meeting with the Rams, will be available for the rematch.
Davis was elevated to the active roster Saturday after being placed on injured reserve with a designation to return. The team made room by placing linebacker Michael Wilhoite (ankle) on injured reserve.
Davis is one of four running backs available for the Rams game. The others are Jarryd Hayne, who started last week's contest, DuJuan Harris and Kendall Gaskins. The team has had four different starters at the position this season and has placed three players -- Carlos Hyde (foot), Reggie Bush (knee) and Shaun Draughn (knee) -- on injured reserve.
Davis, a fourth-round draft pick, rushed 25 times for 24 yards. He is at risk of becoming the first running back since the Chiefs' Donnell Bennett to average fewer than one yard per carry with at least 25 rushes in a season.