The sport of football has changed dramatically over the decades, but what hasn't faltered is the fans' love and devotion to the game. Football is watched by millions of people every week, who cheer for their team and boo everyone else. Football fans makeup one of the most intense fanbases of any major sport and take their knowledge of the game very seriously. So, if you're an NFL fan and you think you know it all, take this How Well Do You Know Your NFL Players and Teams quiz and find out how much you really know. Good luck, and let's play some ball!