1969 - Diane Crump became the first female jockey to compete in an officially sanctioned professional American horserace at the Hialeah Park racetrack in south Florida on this date. Crump grew up in Oldsmar, Pinellas County, where she began her riding career, and was only 18 when she first competed professionally against her male counterparts. She would go on to become the first women to compete in the Kentucky Derby in 1970 and continued to compete professionally over the course of the next 30 years winning hundreds of races along the way.