In my first look at the Yards per Attempt statistic in National Football League quarterbacks, I found there was a general correlation between Football Outsiders’ offensive line rankings and Yards per Attempt. Although I’m happy to see that there was some correlation, it made future predictions near impossible because FO owns the offensive line rankings.
In this piece, I’m going to see if we can create a better formula for predicting YPA than the one discussed in this Pro Football Focus article. Jonathan Bales used the average of a quarterback’s previous three seasons to predict future YPA numbers. Let’s see how accurate his predictions were for 2012, and how we can improve them. Continue reading A Unified Theory of Yards Per Attempt in NFL Quarterbacks