This Day in History: 1939-05-13

Louis Schaefer became the first person to have ridden and trained a Preakness Stakes winner after he saddled Challedon to victory. Schaefer won the 1929 Preakness as a jockey, riding Dr. Freeland. Schaefer’s double was replicated by jockey-turned-trainer John Longden, who rode Count Fleet in the 1943 Preakness and trained Majestic Prince to win the race in 1969.