A horse is a horse, of course (of course). But Lexington, a bay colt born on a Kentucky farm in 1850, was by any measure extraordinary. As a racehorse, he was close to unbeatable, and such a pop icon that thousands once crowded into sweltering grandstands to watch him race solo, against nothing but a stopwatch. His subsequent legacy as a stud sire, however, proved even greater. Lexington sired 575 foals, four.
