David Marsh won 12 NCAA swimming titles as the coach at Auburn University. Then he walked away from it all in 2007 to take over a club team, SwimMac, in Charlotte, North Caroline. It was a strange move, especially since Charlotte had the fewest swimming pools per capita among the 50 largest U.S. cities. In the nine years since Marsh arrived at SwimMac, the club has become the go-to place for swimmers of all levels. Olympic champions Cullen Jones, Ryan Lochte and Tyler Clary have all trained at SwimMac. And many more superstars are coming up through the SwimMac pipeline.