If, at post time, only one horse remains eligible to race, that horse must be ridden past the judge's stand, break from the starting gate, and complete the listed distance of the race. The horse will then be declared the winner.
Wash. Admin. Code § 260-66-010
Statutory Authority: RCW 67.16.020 and 67.16.040. 08-05-088, § 260-66-010, filed 2/15/08, effective 3/17/08; Rules of racing, § 292, filed 4/21/61.