In what year did the Kentucky Derby start restricting the field to 20 horses with the top earnings?

Question

Also, are those earnings for the horse only in his 3-year-old year, or do those earnings include the horse's 2-year-old earnings and 3-year-old earnings? Do the other Triple Crown races limit the starters by earnings? Or are the Preakness and Belmont field usually small enough that this is not needed?

Also, in the racing program, a B means a horse is wearing blinkers, but what does the b and f mean?

I know that The Jockey Club requires all racehorses be tattooed on the inside of their upper lip as identification. Does The Jockey Club also use micro-chipping?

Finally, some sources list Alonzo Clayton in 1892 and James Perkins in 1895 as the youngest jockeys, at 15, to win the Derby. Other sources list only Clayton as the youngest to win. Any clarification on this?

Many thanks.

Answer 1

They started this in 1990. they include the 2 and 3 year old earnings. Earnings are not necessary for the Preakness and Belmont.

the b and f question:

b is for bute, f is for front wraps on the horses legs.

no the jockey club does not use micro-chipping

no clarifiaction on your last question !

Answer 2

b and f means first time blinkers