Allen Jerkens took out his trainer’s license as soon as he turned 21, and he only waited that long because his father forbid him to do so any sooner. He enjoyed solid success almost from the very beginning and won his first stakes race in 1955 with a horse named War Command, whom Jerkens had claimed for $8,000. Seven years later, he agreed to become the private trainer for Jack Dreyfus Jr.’s Hobeau Farm. Though Hobeau Farm didn’t always deal in the most fashionable of pedigrees, it did provide Jerkens with volume. And Jerkens certainly had a knack for getting the most out of his horses.

Any day, at any racetrack across the country, you’ll most likely find a female jockey in one of the races.

They’ve won Triple Crown races, Breeders’ Cup races and marquee stakes such as the Kentucky Oaks and Pacific Classic. Julie Krone, who won 3,704 races, is enshrined in the Racing Hall of Fame in Saratoga Springs, N.Y.