Mazzone Best Assistant Coach of All-Time?

Here is a excellent article on ESPN.com about Leo Mazzone's job as pitching coach for the Atlanta Braves over the last 15 years. It argues that he's the greatest assistant coach of all-time. As a long time Atlanta fan, I find that hard to argue with. It's also an exhaustive article with interviews with roughly 15 people who he worked with or coached over the last 20 years, including quite a few pitchers who benefied from his mentorship.