Wisconsin Statutes Gaming (Ch. 561 to 599) § 562.075. Horses foaled in this state; three-year-old horses

(2) Three-year-old horses. (a) Definition. In this subsection, “3-year-old horse” means a horse which was foaled during the 3rd year immediately before the year in which the horse participates in a race.

(b) Races. Every person licensed to sponsor and manage horse races under s. 562.05(1)(b) or (c) shall hold at least one race, on every race day, which is limited to 3-year-old horses, which did not race during the prior 2 years. If the licensee is unable, with reasonable effort, to attract sufficient competition for such a race, another race may be substituted.