Jordan Mason questionable to return with left shoulder injury

The 49ers already are without starting running back Christian McCaffrey, likely for a few more weeks. Now, at least temporarily, they are without his backup, Jordan Mason.Mason was injured on a 14-yard run when he landed on his left shoulder with the weight of safety Julian Love landing on him. He remained on the ground after the play.Mason headed to the X-ray room and his return his questionable.He entered the game with a league-leading 105 carries for 536 yards and three touchdowns and has rushed for 65 yards on eight carries tonight. Mason also has a 9-yard reception. The 49ers lead the Seahawks 13-0 and are driving for more.