A method of generating a graphical user interface for horse race betting includes querying a database to obtain race data associated with a selected race, the race data including a list of horses scheduled to run the selected race, a track surface associated with the selected race, and a distance of the selected race. For each horse from among the list of horses, the method may include selecting a rating corresponding to the horse, the track surface, and the distance, the rating being selected from a plurality of ratings quantifying an expected performance of the horse for different combinations of track surface and distance and being derived from data associated with a sire and/or a dam of the horse. The method may include displaying the list of horses and displaying the selected ratings in association with the horses.