I Paid a Premium for a ‘Perfect’ Pedigree. He Never Won a Race.
Whether you’re planning a mating or shopping a yearling, the search for speed starts with the same question: what can genetics actually tell you about a racehorse’s potential — and what remains impossible to predict? Pedigree, heart size, muscle fiber type, conformation, and the mare family all shape a horse’s speed potential, but none of …

