A Guide to the Rules on Clubs and Balls

Playing Characteristics Changed (Rule 4-2a)

This Rule states that:

 During a stipulated round, the playing characteristics of a club must not be purposely changed by adjustment or by any other means.

The purpose of this Rule is to prevent the player from purposely modifying his club during a round – for example to a flatter lie, a greater loft, an alternative weight distribution or changing the head or shaft.This is regardless of whether the club has been designed to be adjustable.