The manner of selecting positions of horses at the post shall be determined by the stewards. The selection shall be by lot and shall be made by one of the stewards or someone designated by them, in public, at the close of the entries. The horses so drawn shall be entitled to a position at the post corresponding to the number drawn, which number shall be exhibited on the saddlecloth and printed in the program with the name of the jockey or driver.
Cal. Code Regs. Tit. 4, § 1598