House Rules at Churchill Downs Racetrack. Known as the home of the Kentucky Derby and the Kentucky Oaks, Churchill Downs Racetrack conducts. As you plan your trip to Churchill Downs for Kentucky Derby weekend, be sure to review the list of items that are permitted and those that cannot be brought into. Named Florida-bred horse of the year for his 2-year-old exploits, Three Rules is aiming for greater heights as he heads toward the Kentucky Derby. Trained by. Three Rules has yet to feature as an individual wagering option in the Kentucky Derby Future Wager. The first is chance. That means longshots like Giacomo are even less likely to encounter the volatile circumstances that enable them to win. Players must be at least 21 years of age to participate in the NHC in Las Vegas. Triple Crowns of horse racing. For the season point system, see Road to the Kentucky Derby.