Issue link: http://itf.uberflip.com/i/536583
9 17. Decide if a court is fit for play. 18. Decide if a match should be moved to another court. If bad weather or other unavoidable circumstances causes disruption or suspension of a match in progress, then if necessary to eliminate the possibility of a player having to play two (2) singles matches in one day or if necessary to complete the event, move a match to another court. In all other cases a match shall not be moved after it has officially started, i.e. the first serve of the first point has been struck, except with the agreement of the players, which agreement shall not be unreasonably withheld. Whenever possible a change of courts should be made at the end of a set or after an even number of games in the set in progress. 19. Decide when play should be postponed because of weather conditions, inadequate light or other conditions. If play is postponed on account of darkness such postponement should be made at the end of a set or an even number of games in the set in progress. 20. Ensure delivery whenever possible to every player cited for an on-site offence a copy of the relevant Grand Slam Code of Conduct form. 21. Be present on-site at all times during play. The Referee may not be a Chair Umpire or Chief Umpire in the Tournament. N. GRAND SLAM OFFICIATING/REFEREE, CHIEF OF GRAND SLAM SUPERVISORS AND GRAND SLAM SUPERVISORS The Referee shall be the final authority on all officiating matters at each Grand Slam Tournament. The Chief of Grand Slam Supervisors shall serve as a special consultant to the Referee on all officiating matters in order to ensure the uniform application of the rules. The other Grand Slam Supervisors shall assist the Chief of Grand Slam Supervisors and the Referee as they may request and direct. O. CHIEF UMPIRE The Chief Umpire, in consultation with the Referee and Grand Slam Chief of Supervisors, shall: 1. Recruit a sufficient number of competent officials for the tournament and submit a list of these officials to the Referee and the Administrator of the Grand Slam Officiating Programme at least ninety (90) days in advance of the Championship for review. 2. Conduct the necessary pre-tournament training of officials including review of the Rules of Tennis, the Grand Slam Tournament Regulations, the Grand Slam Code of Conduct and the Duties and Procedures for Officials.