HR-- I guess you could do an ROI by taking the top figure horse in each race, but what would a good score be, and there's no way Ragozin would do it no matter what, and who would be auditing both our studies even if they did...

The right way is to have an ongoing study, and there are lots of other ways you could cut it up. Like, place the horses in each race in order based on the figure they get by that formula. Then take the winner of the race, and see who ranked him higher. Etc., etc...