1973 Belmont Stakes meant he completed the Triple Crown of Thoroughbred Racing. This was significant as he was the ninth horse to complete the feat and broke a 25-year drought where a horse failed to complete the achievement. Secretariat, Sham, Pvt. Smiles, and My Gallant were the first four horses to be entered into the Belmont Stakes. Secretariat, winner of both the Kentucky Derby and the Preakness Stakes, was the odds on favorite to win the event. The added distance of the Belmont when compared to the Derby and Preakness was found to be one potential reason for Secretariat to lose the race.
Belmont Stakes tradition is similar to the singing of the state song at the post parades of the first two Triple Crown races: "My Old Kentucky Home" at the Kentucky Derby and "Maryland, My Maryland" at the Preakness Stakes. The change of song gave rise to "the myth of Mamie O'Rourke," a reference to a character in the lyrics of "The Sidewalks of New York." Before American Pharoah won the Triple Crown in 2015, some claimed that changing the official Belmont song "cursed" the Triple Crown and was why no horse had won since Affirmed in 1978. Others note that there was