US lawMichiganRegulationsDepartment — TreasuryBureau — Michigan Gaming Control BoardR 431.1001 to 431.5040 — Horse Racing General Rules431.2025R 431.2025R 431.2025 Mutuel windows.Last amended: 2021Year: 2026Length: 15 wordsOfficial source Cite as Mich. Admin. Code R 431.2025Rule 2025. Mutuel windows shall open not less than 30 minutes before the first race.PreviousR 431.2020NextR 431.2030