This is a very good article on how analytics are used in the NBA. Fans of Moneyball will especially enjoy it.
An economist named David Berri, citing a stat he created called Wins Produced, which boils down a player’s positive and negative contributions into one number, went so far as to argue that KG was the NBA’s best player in every season from 2002-03 to 2005-06.
I’m looking forward to the rest of the ESPN analytics issue.