Watching the Bills game I came away with the same conclusion: This dude's running style will have him hurt all year if he is a starting back. In order for him to stay in one piece, he needs to have just a handful of carries a game. Pgh needs to just know it as fact and plan on JD as the starting back. If they can't see this obvious trend, they are dumber than I thought. I have seen this all along and I don't get paid to do this for a living.
I remember the play in which Red got hurt. He was running right, and was caught from behind. Bills defenders landed on his ankle.