There is a fascinating article on the Credit Suisse First Boston website called The Genesis, Implementation, and Management of New Systems. It was written by Paul DePodesta, the assistant GM of the Oakland Athletics. DePodesta was featured in Michael Lewis' Moneyball as GM Billy Beane's "stats guy".
The article on CSFB outlines the challenges and approaches that Beane and DePodesta faced and used when implementing their new player evaluation system of in the A's organization.
It's absolutely fascinating and brilliantly written, and like Moneyball, the ideas contained within about innovation, organizational inertia, and exploiting market inefficiences can be (and are) applied to many domains other than baseball.