Got any screenshots of the covers?
I might go grab some of these...
Here's mine.
Sun Tzu's Art of War:
Play Football the NFL Way
I also enjoyed some of these:
Winning Defense - Bud Wilkinson
This book was one of the primary influences in m defensive philosophy. It covers the basics of setting up fronts to best defend the offensive formation, positional keys to playing the linebacker position, and some good stuff about run support with the secondary... I have to find another copy because I lost my original when I moved to Detroit.
I'm looking at what I should read next...
Later