Knowshon can break tackles and is a good receiver out of the backfield. He runs hard be he just has no speed. Plus his vision is questionable.
Knowshon is better than Hillman at pass blocking but Hillman has really improved quite a bit the last few games. Hillman is no longer a liability on 3rd down passing situations. Therefore we can afford to take Knowshon out.
Plus Hillman has the speed and big play potential that none of our other backs have besides maybe Jeremiah Johnson. And Johnson is only on the practice squad.
McGahee- clearly our best all around back
Hillman- best change of pace back, potential for big plays, and improved pass blocker
Ball- reliable, doesnt fumble much, does a little bit of everything although nothing great.