Buffalo Bills running back C.J. Spiller lies on the field after injuring his shoulder on a first-quarter run against the Cleveland Browns in an NFL football game on Sunday, Sept. 23, 2012, in Cleveland. (AP Photo/Tony Dejak)

Photo by: Tony Dejak

Buffalo Bills running back C.J. Spiller lies on the field after injuring his shoulder on a first-quarter run against the Cleveland Browns in an NFL football game on Sunday, Sept. 23, 2012, in Cleveland. (AP Photo/Tony Dejak)