In his only loss, he had finished second to Holy Bull in the Belmont Futurity Stakes.
Breeders' Cup bettors made him a prohibitive favorite, bet down to odds of 7-10.
In the race, at the three-quarter pole Dehere moved into third place but then faded and finished eighth to winner Brocco.
Despite the loss, Dehere's 1993 performances earned him the Eclipse Award for Outstanding 2-Year-Old Male Horse.
A fracture of his right hind cannon bone during training ended his racing career.