Steve Allday

On the spectrum of Thoroughbred stallions, you won't find too many either side of Gun Runner and Despot. One, charging $250,000 a dance at Three Chimneys, is the most immediately accomplished sire of recent times. The other was claimed for $350 at Waterford Park, some 50 years ago, before being set to work annually producing a handful of half-breds in rural Maryland. "Liver chestnut son of Stevward," says the man whose career unites this unlikely pair. "You should have seen us trying to figure out how to breed mares on...