Unless a referee is assigned, players shall be responsible for officiating their own match. Whenever the players themselves can come to an amicable agreement on any scoring or officiating issues to their satisfaction, and play continues, their decision shall be deemed final. If at anytime in a match either player anticipates a close call, or would like a neutral party to spot a ball, or wishes to have an official ruling in any conflict, then an official should be called. If there is no tournament official, then the house man or another mutually agreed on impartial observer should be summoned to arbitrate. Their decision should be considered final.