‘Meanwhile, the Bills are continuing to evaluate tight end Chris Gragg and defensive end Jarius Wynn, who are both dealing with a knee injury. Running back C.J. Spiller, who was placed on injured reserve designated to return, is eligible to begin practicing this week but can’t return to game action until Week 16. Marrone said the Bills would have an update later in the week on whether Spiller would be able to get back on the field.’