Photo: Metro ServiceAmerican football enjoys worldwide popularity and some of the most ardent fans in all of sport. ■ METRO SERVICE According to Nielsen, 111.3 million people tuned in to watch the Super Bowl in early 2017. Almost two-thirds of adults in the United States say they currently watch National Football League games. But American football is no longer relegated to the boundaries of the United States, as it is becoming a global sport. According to the International Federation of American Football, there are 80 countries with organized federations governing the game. Plus, thousands of youth and adult leagues exist all over the world. Even though soccer has long been a
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