R 431.4185 Also-eligibles.

Rule 4185. (1) Not more than 2 horses may be drawn as also-eligibles for a race. If 1 or more horses are excused by the stewards, the also-eligible horse or horses shall race and take the post position drawn by the horse that it replaces, except in handicap races. (2) In handicap races, the also-eligible horse shall take the place of the horse that it replaces if the handicap is the same. If the handicap is different, the also-eligible horse shall take the position on the outside of horses with a similar handicap. (3) A horse shall not be added to a race as an eligible unless the horse was drawn as such at the time declarations closed. A horse shall not be barred from a race to which it is otherwise eligible by reason of its preference due to the fact that it has been drawn as an also-eligible. (4) A horse moved into the race from the also-eligible list cannot be drawn except by permission of the stewards, but the owner or trainer of the a horse shall be notified that the horse is to race and it shall be posted at the race office. All horses which are on the also-eligible list and which are not moved in to race by 9 a.m. on the day preceding the day of the race shall be released.