Leo Mazzone, Pitching Genius?

It's been a long-standing question in baseball; during all those years of Atlanta Braves pitching dominance, how much credit did pitching coach Mazzone deserve for all of the Cy Youngs, the 20-game winners, and the top-five staff ERAs almost every season? We may know the answer to that question starting next season. If Leo signs on with his good friend Sam Perlozzo and miraculously turns the putrid Baltimore staff around, then there can no longer be any doubt that he's the real deal.