Tennis Official is a term used to describe the people who are responsible for officiating a tennis match. A Scorer (6 letters) is responsible for keeping track of the score and recording it accurately. An UMP (3 letters) is responsible for making sure that the rules of the game are followed and that the players are playing fairly. An UMPIRE (6 letters) is the highest authority on the court and is responsible for making the final decisions regarding the match.