AP

Bills running back LeSean McCoy aggravated his hamstring injury this week, making him officially questionable for Sunday’s showdown with the Patriots.

Unofficially, and according to a source with knowledge of the situation, McCoy currently is expected to play.

That could change during pre-game warmups, especially if the hamstring tightens. Regardless, it’s clear that the hamstring continues to be an issue, and that it could be for weeks. With rest the only way to heal a hamstring pull and with McCoy determined to prove that Eagles coach Chip Kelly screwed up when cutting McCoy loose (and also hoping to help his new team win), it will be difficult to keep McCoy under wraps.

Especially in what could be Buffalo’s biggest regular-season game in decades, if not ever.