Book excerpt: The book every football fan should have! Every fall weekend, millions of Americans sit down to watch NFL football games. And many of these fans end up shouting at the TV set, yelling questions like, "Why did the coach call that play on third down?" and "Why'd the ref call that penalty?" Now there's a guide to answer these frustrating questions and many others. The Pro Football Fan's Companion details offense and defense, special teams, strategies, rules and more and even offers a sneak peek into the life of a pro player in a special feature, "A Week in the Life". So whether you're compelled to dispute a call by the referee, or just need to brush up on the rules, The Pro Football Fan's Companion will provide the necessary coverage.