page_title: Official (tennis)
section_title: Chair umpire
hierarchical_section_title: Official (tennis) / Chair umpire
caption_attribution_description: Italiano: Controllo del segno della palla di un arbitro di tennis
context_page_description: In tennis, an official is a person who ensures that a match or tournament is conducted according to the International Tennis Federation Rules of Tennis and other competition regulations.
  At the highest levels of the sport, a team of up to eleven officials may be on court at any given time. These officials are broken up into categories based on their responsibility during the match. Contrastingly, many tennis matches are conducted with no officials present directly on court.
context_section_description: The chair umpire is the final authority on all questions of fact during the match. Questions of fact include whether a ball was in, the calling of a service let or the calling of a foot-fault. In matches where line umpires are also assigned, the chair umpire has the right to overrule if he or she is sure that a clear mistake has been made.
  The chair umpire is often situated in a tall chair at the center of the court, behind a net post. The players' benches are to either side of the chair. From this position, the chair umpire calls the score of the match to the players and spectators between points. At the conclusion of a point, game, or set, the chair umpire times the players to ensure they follow ITF regulations on pace of play. The chair umpire is responsible for completing a scorecard, the official historical record of the match.
caption: Chair umpire check sign of ball on clay.
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