This page contains a statistic I’ve designed called Yards Above Replacement (YAR). It is designed to understand how a QB performs relative to his peers (oYAR, more positive is better). It also allows for a measure of how a defense is at stopping an opposing QB (dYAR, more negative is better).
If you subtract dYAR from oYAR, you get a measure of team success based on QB play for and against (ΔYAR, more positive is better) .
After Week 1 of the 2018 season, here are how all of the Power-5 teams rank: