Golf is a sport in which a player, using several types of clubs incluing a driver and a putter hits a ball into each hole on a golf course in the lowest possible number of strokes. Golf is one of the few ball games that does not use a standardized playing area; rather, the game is played on golf "courses," each one of which has a unique design and typically consists of either 9 or 18 separate holes. Golf is defined in the Rules of Golf as "playing a ball with a club from the teeing ground into the hole by a stroke or successive strokes in accordance with the Rules."