21.   One answer was ventured Friday by D. Wayne Lukas, who has entered three horses in the Derby and has won with four others, including Charismatic last year.

22.   Other states restrict the claims to trainers who have a horse entered in the race.

23.   Purse bonuses encourage owners to enter their horses in marquee races.

24.   Seven horses have been entered, but that may change if the trainer Elliott Walden decides to run Ecton Park in the Haskell.

25.   Spawr has entered six horses on the final two cards, Mandella two.

26.   Some trainers enter a horse in a claiming race because the level of competition is lower and the horse might gain some momentum if he wins.

27.   The horses are already entered.

28.   The last horse entered in the Belmont Stakes, Chilito, might be first out of the starting gate Saturday.

29.   The Prestons are reconsidering because only seven horses so far are entered, and theirs has looked good in recent workouts.

30.   The season opened at Churchill Downs with the Derby Trial the featured race, although no Derby horses were entered.