'The Buffalo Bills will have McCoy, but they won’t have his main backup in the lineup on Sunday. After injuring his hamstring during practice on Wednesday, the Bills have since shut Mike GIllislee down completely for the rest of the week. Gillislee didn’t participate in practice at all on Thursday or Friday, and the Bills officially listed him as ‘out’ against the Jacksonville Jaguars. Without him, that means both Reggie Bush and Jonathan Williams will get opportunities as the player that spells McCoy when he needs a break.;