IAA Fan,
I know that you prefer the old fashioned power running game, but since we are running out of a spread formation, backs like Ruiz and Webb are perfect fits. From the spread, hitting small holes explosively and then speed in space are the most important attributes. Both of these guys, although young, demonstrate such potential. Of course, you must still pick up the tough yards on third and short, but we can easily convert to a power formation with Pace and Sharbaugh. Of the many things we must worry about, running back is not one of them.