If two or more horses in a race are coupled on the same pari-mutuel ticket, there shall be no refunds unless all of the horses so coupled are excused before off-time. Discretion is, however, vested in the Judges to order a refund when it is in the public interest to do so. In such an instance the remaining part of the entry shall race for the purse only.
01-017 C.M.R. ch. 13, § 22