A professional who observes horse race at racetrack to detect infractions of racing rules and resolve claims of fouls committed. Responsibilities include:

• Watches race from elevated stand at one of several locations around track, using binoculars to detect infractions of rules, such as action of jockey causing another horse to change stride.
• Reports name and number of horse and rider guilty of foul to racing officials for disciplinary action.
• Confers with racing officials and watches motion picture of race to verify infractions and to determine validity of complaints lodged by participants.
• Submits report to racing officials concerning infractions of rules and disciplinary action taken.
• When flashing numbers of first three horses as race progresses or observing horses in stretch in order to post first four horses crossing finish line, is designated Placing Judge.