Total QBR measures nearly every aspect of quarterback play including passing, designed runs, scrambles, turnovers and penalties. QBR also strives to separate the performance of the individual quarterback from the rest of his team, in order to rate the overall efficiency of each quarterback in the league.
One thing it hasn't done, however, is account for the strength of the 11 players on the other side of the line of scrimmage.
But now, QBR accounts for opposing defenses; quarterbacks who face tougher defenses will have their ratings adjusted upward in proportion to the difficulty of their opposition, and those who face weaker defenses will have their ratings adjusted downward. The new, adjusted QBR is now the number you'll find under the "Total QBR" column at the QBR page.
For a full explanation of how ESPN determines QBR, click here.
With that, a look at ESPN's current QBR rankings through Week 3 of the 2016 season:
