In early closing races, late closing races, and overnight races requiring entry fees, all monies paid in by the nominators in excess of 85 percent of the advertised purse shall be added to the purse. In addition to adding excess entry fees as provided above, the sponsor shall contribute at least 15 percent to the advertised purses of late closing races and overnight races. At least 15 percent of all monies paid in by the nominators shall be contributed to all early closing races by the sponsor. Where a race is split into divisions each division shall have a purse.
N.Y. Comp. Codes R. & Regs. Tit. 9 § 4111.29