1. a) Preference shall be given in all overnight events according to a horse's last previous purse race during the current year. The preference date on a horse that has drawn to race and then scratched is the date of the race from which he was scratched. When a horse is racing for the first time in the current year, the date of the first declaration shall be considered its last race and preference applied accordingly.
2. b) Provided, however, that where an overnight race has been re-opened because it did not fill, all eligible horses declared into the race prior to the re-opening shall receive preference, irrespective of the actual preference dates.

(Source: Amended February 13, 1976; filed March 1, 1976)