The Packers are playing the Rams and they have a horrible defense. Most likely Green Bay will be up early and easily win this game, meaning at least 20+ carries for Grant. On the other side, yes Portis hasn't been playing that well but its Detroit. The only problem, I've got a feeling the Lions are going to keep this game close and possibly winning it, meaning Portis won't be running as much as Grant will. Portis will still play like he should even if he is a little bit banged up, for some reason he usually pulls through. But I'm going with the worse team, I consider the Lions to be better than the Rams meaning more garbage time for Grant.