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Cyclops is a computer system co-invented by Bill Carlton of Great Britain and Margaret Parnis England of Malta, [1] which is used on the ATP and WTA professional tennis tours as an electronic line judge to help determine whether a serve is in or out.
The Electroline; the first computerized, electronic line judge device, introduced in 1974. An electronic line judge is a device used in tennis to automatically detect where a ball has landed on the court. Attempts to revolutionize tennis officiating and the judging of calls in the sport began in the early 1970s and has resulted in the design ...
The ball must completely miss the line to be considered "out". This also means that the width of the line (except for the center service line) is irrelevant to play. The center service line is 2 in (5 cm), the other lines are between 1 and 2 in (3 and 5 cm) wide, whereas the baseline may be up to 4 in (10 cm) wide.
Line-calling technology has long been used at Wimbledon and other tennis tournaments to call whether serves are in or out. At the U.S. Open, there has been no line judges — and only chair ...
Real tennis (also royal tennis or court tennis): An indoor racket sport which was the predecessor of the modern game of (lawn) tennis. The term real is used as a retronym to distinguish the ancient game from the modern game of lawn tennis. Known also as court tennis in the United States or royal tennis in Australia. [113]
For example, a line umpire on the receiver's side may have to cover the center service line then, following the service, move to one of the sidelines. The line umpire signals a ball out by making a verbal "out" call ("fault" for a serve) followed by the extension of the arm shoulder high in the direction the ball was out.
The tiebreaker gave tennis a definite "finish line". In what follows, the "final set" means the fifth set for best-of-five matches, and the third set for best-of-three matches. In 1970, the US Open introduced the nine-point tiebreaker rule for all sets that reach 6–6, both in singles and in doubles.
Enjoy a classic game of Hearts and watch out for the Queen of Spades!