http://profootballtalk.nbcsports.com/2013/01/03/polian-thinks-moneyball-wont-work-in-nfl/
“As a practical tool, Moneyball does not work in the NFL because there are very few undervalued players and no middle class because of our salary cap,” Polian said. “There is no middle class in football because the minimum salaries are so high, and because of the salary cap, a player will reach a point where you can’t keep him. They go. They’re going to get big money elsewhere.”
Mods, feel free to merge. I thought because of Polian it might deserve its own topic.