With roughly 10 games under the belt of each team in the Top 25, there is plenty of data to accurately evaluate performance so far in 2012.
From Kansas State to Washington, there are some seriously great defenses out there and some hideously bad ones. Most of the hideously bad defenses have been bailed out by their offenses so far this season.
In the next 25 slides, we will take a look at each defense in the BCS Top 25 and give each team a letter grade according to the following stats: total defense (passing and rushing yards combined), passes allowed over 20 and 40 yards, rushes allowed over 20 and 40 yards, scoring defense and quality of schedule.
*Red-zone scoring was not included on purpose. Red-zone defense is inherently included in scoring defense, and red-zone defense doesn't account for touchdown passes of over 20 yards.
*Stats and rankings from cfbstats.com, and total defense rankings were based on yards per game (as opposed to total yards allowed on the season).