Moneyball Comes to The NFL

New Moneyball metrics for football.  Very good article - - this is a sample:

Football's Pythagorean Theorem

In a Sentence: Point differential is a better indicator of future winning percentage than winning percentage itself.

How It Works: Created by Bill James for baseball and modified for football in the early '90s by current Houston Rockets general manager Daryl Morey, the Pythagorean theorem (or "Pythagorean expectation") is a formula that translates a team's points scored and allowed into an "expected" winning percentage. That formula isn't exactly for the faint of heart:

Points For^2.37 / (Points For^2.37 + Points Against^2.37)