Book excerpt: During his nearly 30 years at Sports Illustrated, Paul Zimmerman—known to readers as “Dr. Z”—rose to fame as one of the top writers in football history. The follow up to Zimmerman’s 1971 classic The Thinking Man’s Guide to Pro Football, The New Thinking Man’s Guide to Pro Football builds on the timeless insights of his original work. Filled with personal anecdotes from Zimmerman’s years covering football, this book offers a fascinating insight into the sport that will appeal to any fan that wants a deeper understanding and appreciation for the game. More than a generation later, Zimmerman’s work is as applicable today as when the updated edition came out in the late 1980s. This widely-acclaimed guide covers: Positions Tactics Football scouting Broadcasting Minor leagues Time strategies Great players and top moments