The National Football League the highest level of American football in the world. The skill gap between the NFL and every other football league is enormous. Every NFL roster is filled with elite athletes who were stars playing college football, yet even first round draft picks often struggle to become consistent starters because the competition is so intense. What makes the NFL special is how difficult sustained success is. The salary cap creates parity, meaning dynasties are incredibly rare and every season brings new contenders. Winning just one Super Bowl is an achievement that defines an entire NFL career, while winning multiple championships places players and coaches among the greatest in football history. A single game can come down to one throw, one tackle, or one coaching decision. The league is also packed with superstar talent at every position. Quarterbacks make impossible throws under pressure, wide receivers pull in unbelievable catches, running backs break tackles from...