Breaking down NFL combine RBs

When evaluating running backs and fullbacks, it is important to consider all aspects of their games -- competitiveness, vision and patience, agility and acceleration, power and balance, and their skills in the passing game.

Below is an explanation of the categories in which Scouts Inc. grades running backs, as well as our ranking of all receivers invited to the 2013 NFL combine. Also included in this cheat sheet are five-year measurement and timing trends, picks from Rounds 1 and 2 of the 2012 draft, and recent wide receiver market trends.