How many starting RBs are worse than Portis?

[Eknox]

I think the problem with Portis other than O-line is his back doesn't come in and give a change of pace and help soften up the D-line Betts is the problem he's worthless, and should be shamed for taking money for what he doesn't do. Yeah Portis is on the down slope, but he can still produce. When he needs a breather Betts gains what 1 or 2 yards if not lose yardage. I say we start with getting rid of that worthless piece of sh$%#!