Mo. Code Regs. Ann. tit. 12, § 50-80.040
PURPOSE: This rule sets forth the definitions and calculations of the place pool.
(3) In the event of a dead heat for second between horses representing the same betting interest, the place pool is distributed as if no dead heat occurred. If between horses profit is divided in half, with one-half (1/2) allocated for representing two (2) or more different betting interests, the wagers to place on the horse which finished first and the other half divided equally as follows: