To understand how the NFL became the sports phenomenon it is today, you can study its history or you can live its history as an active participant. Upton Bell grew up at the knee of the NFL's first great commissioner, his father, the legendary Bert Bell, who not only saved the game from financial ruin after World War II but was one of its greatest innovators. Coining the phrase "On any given Sunday," Bert invented the pro football draft and proposed...