Leo Mazzone? Not even close. Leo is amazing. No doubt. But Dunc has been pretty fantastic with pitchers that have come from other teams. Developing home grown talent has been the only real knock on him. My memory may be off, but I seem to remember as many failed pitchers as successful ones in St. Louis in recent years. Pitching wins, and the Cards have won with Dunc as the pitching coach. But you're right to an extent. For evey Carpenter and Morris, they're is a Stephenson and Simontachi.