The great thing about the NFL is that it's always full of the unexpected. One never surely knows what they are going to get from one season to the next. Top-tier players seem to be the most consistent, whereas middle-to-lower-tier players fluctuate more often than not.
This can be said about players at every position. Some positions see more turnover than others during the offseason, and it just depends upon the year and the strength of the draft class at that position.
This year's list of starters at the running back position is shaping up to have quite a few familiar names. So, let's do our best to project realistic stat predictions for every starting running back in 2013.