Leader board for qualifying points to the 2013 Kentucky Derby, which will be run at Churchill Downs in Louisville, Ky., on Saturday, May 4, 2013. Churchill Downs has moved to a points system to determine the field for the Derby, scrapping the previous system of graded stakes earnings. Points are earned by the top four finishers in designated Kentucky Derby prep races. Earnings in non-restricted stakes races serve as a tie-breaker.