Peter Doubleday usually has the best seat in the house at a horse show, whether it’s high in the announcer’s stand or by the in-gate. Doubleday has been the voice of American show jumping for decades, and he’s also at the helm, as manager, of three of the most prestigious shows in North America—the Pennsylvania National, the Royal Winter Fair (Ont.) and Devon (Pa.), where he co-manages with David Distler.