Who will back up Clinton Portis?

[Shane]

I think that to give Clinton Portis a chance to be fresh and to minimize the workload he gets to keep him healthy, we need a halfback that can be a serious threat to partner with him and take on 15-20% of the carries.

I think Sultan McCullough has a chance to be a very good running back. He showed some real flashes, and I think that he will really show something when he gets a chance in preseason. McCullough potentially is that kind of breakaway threat you would like in Portis' backup.