Derby replaces graded earnings with point system

[Linny]

The Preakness and Belmont are rarely oversubscribed so they have not had to implement a system, though te Preakness does have one.

It would be nice to have a way to encourage participation in all three races. For a while there was a bonus system that rewarded horses who ran in all three. It came to an end when someone (can't recall who) won the bonus for having run something like 3rd or 4th or 5th in all of them.