Secretariat was a star but not yet a legend when his van rolled up to Pimlico Race Course in the second week of May 1973.
The big red horse had taken off like a rocket ship to run down the field at the Kentucky Derby, winning in less than two minutes, a record.
Yet victory in Baltimore, at the Preakness, was far from a foregone conclusion. The previous year, Secretariat's stablemate, Riva Ridge, had faltered in the second leg of the Triple Crown after winning the Derby. And Secretariat's chief rival, Sham, remained a formidable threat.
Forty years later, as Baltimore...