It is hard to compare all three, but in the 4th quarter I want Ragas after having about 15 carries in the game. He gets better as the game goes on and is guaranteed 3 yards minimum vs a tired defense.
Early in the game I want a steady dose of a mix of Mitchell and Ragas. Ragas for the power and Mitchell for the fact that he can break any play into a TD.
And then pepper in Calais periodically wherever you see fit.
There are two amazing facts for this football team that people need to remember. We have lost a total of 3 fumbles all year. Considering how much we run the ball, 3 fumbles is amazing, the other fact is I personally can not remember any of our RB's losing a fumble. I do remember a play where Lewis and one of our backs collided. But these three guys rarely fumble the ball.
The other fact is that all three of them are dangerous out of the backfield catching passes. They have all done it well this year. I am actually surprised Calias has not done it better but all three are capable if not better than average receivers. I would like to see Calais line up as a slot guy and run a few plays for him in space.