Most disappointing Sires

[Linny]

In all honesty, AP Indy was the only one of those HOY's who had a "stallion's pedigree." Most of those horses did just about what was expected in the stud. Of the list, I'd call Favorite Trick a failure. With his speed and early maturity, I'd have expected him to be a top Juvie sire.
It's not fair to count infertile or subfertile stallions as failures as sires any more than it would be to do so for a gelding. Lure was subfertile and though he got some nice offspring, he was rarely bred to good mares because most breeders don't want to risk a productive year from a top mare on a stallion who is unlikely to get her in foal.