The stewards shall maintain a Steward's List of those horses which are ineligible to start or be entered in any race because of poor or inconsistent performance. The stewards may place on such list any horse which, in their opinion, has run an unsatisfactory race and its entry to any race shall be thereafter refused until it is demonstrated to the stewards that it should be removed from the list.
Cal. Code Regs. Tit. 4, § 1550