Secretariat & Sham: The Duel at the Kentucky Derby On May 5, 1973, Churchill Downs witnessed one of the most unforgettable rivalries in racing history. Secretariat, the chestnut colt destined for greatness, faced Sham — a powerful competitor whose heart and courage were just as immense. From the break, Sham pushed Secretariat to his limits, forcing him to dig deeper and unleash the speed that would carry him into legend. Sham finished second, but his role was far greater than a runner-up: he was