(Effective January 2023) Rule 18 covers taking relief under penalty of stroke and distance. When a ball is lost outside a penalty area or comes to rest out of bounds, the required progression of playing from the teeing area to the hole is broken; the player must resume that progression by playing again from where the previous stroke was made.

This Rule also covers how and when a provisional ball may be played to save time when the ball in play might have gone out of bounds or be lost outside a penalty area.