WAC 260-44-020
WAC 260-44-020. Minimum weights
(1) In all overnight races, except handicaps, the minimum weight, subject to sex and apprentice allowances, will be 111 pounds for two- and three-year-old thoroughbreds, 115 pounds for four-year-old and older thoroughbreds. For all other breeds, 116 pounds for two- and three-year-olds, 120 pounds for four-year-old and older.
(2) In all races, except handicap races and races where the conditions expressly state otherwise, the individual authorized to enter a horse may declare the following weight allowances: Two-year-old fillies 3 lbs., and three-year-old and older fillies and mares 5 lbs., before the 1st of September, and 3 lbs., thereafter.
(3) The racing secretary will establish the maximum weight for age in all races in the condition book. Weight allowances are optional and must be declared at time of entry.