Parts of the Course: Through the Green
The modern term “through the green” reflects some history of the game of golf in that the entire playing area once was called the green. Today, through the green means the whole area of the course except for the teeing ground and putting green of the hole being played and all hazards on the course. The Rules generally do not make a distinction between the rough and fairway, as these areas are all through the green. In fact, the only time you’ll see the term fairway used within the Rules is in Rule 25-2, when defining closely-own area.
Knowing whether a ball lies through the green or on another part of the course is important in proceeding correctly under an applicable Rule, such as Immovable Obstructions or Abnormal Ground Conditions. If the ball lies through the green when applying either of these Rules, then the nearest point of relief must be through the green and the ball must be dropped through the green. This is an important area of the course, and knowing its definition will help you to proceed under the correct Rule.