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There are only three undefeated teams left in the NFL: the Atlanta Falcons, the Houston Texans, and — wait for it — the Arizona Cardinals. Not only is Arizona's record a surprise, but to get there, they knocked off preseason favorites New...

Part of the fun of being a football fan is assigning credit (and blame) on coaches and players. To do this properly — to be an informed fan — you have to understand what the players were trying to do in the first place. In this first ins...