Ball Assisting or Interfering with Play (Rule 22)
- lift your ball or have any other ball lifted if you think the ball might assist another player, or
- have any ball lifted if it might interfere with your play.
You must not agree to leave a ball in position in order to assist another player.
A ball that is lifted because it is assisting or interfering with play must not be cleaned, except when it is lifted from the putting green.