Orchard Park, NY (SportsNetwork.com) - The Buffalo Bills placed running back C.J. Spiller on injured reserve/designated for return Tuesday.
In a corresponding move, the team signed running back Phillip Tanner.
Spiller underwent surgery Monday to repair a broken clavicle.
He got hurt in the second quarter of Sunday's 17-16 win over Minnesota. Spiller came down hard on his left shoulder at the end of a 53-yard run, his lone carry of the game.
Fellow running back Fred Jackson could miss up to four weeks with a groin injury.
Tanner spent the past three seasons with the Dallas Cowboys, compiling just 56 carries for 149 yards and two touchdowns.