Graded stakes race
A graded stakes race is a thoroughbred horse race in the United States that meets the criteria of the American Graded Stakes Committee of the Thoroughbred Owners and Breeders Association (TOBA). A specific grade level (I, II, III or listed) is then assigned to the race, based on statistical analysis of the quality of the field in previous years, provided the race meets the minimum purse criteria for the grade in question.