Breaking down NFL combine QBs

When evaluating quarterbacks, it is important to consider all aspects of their games -- mental makeup, accuracy, release/arm strength and pocket mobility.

Below is an explanation of the categories in which Scouts Inc. grades quarterback prospects, as well as our ranking of all quarterbacks 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 quarterback market trends.