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  2. List of tennis code violations - Wikipedia

    en.wikipedia.org/wiki/List_of_tennis_code_violations

    The incident led to a change in the rules of professional tennis to allow players to receive medical treatment during matches. [9] [10] 1996 Indianapolis Open, USA Andre Agassi: Daniel Nestor: Ball abuse and verbal abuse. [11] [12] 1997 Miami Open, USA Mariano Zabaleta: Adrian Voinea: Disqualified over hitting a line judge with a ball. [13] [14]

  3. Hash mark (sports) - Wikipedia

    en.wikipedia.org/wiki/Hash_mark_(sports)

    In American football and Canadian football, the hash marks are two rows of lines near the middle of the field that are parallel to the side lines.These small lines (4 in [10 cm] wide by 2 ft [61 cm] long) are used to mark the 1-yard sections between each of the 5-yard lines, which go from sideline to sideline.

  4. Electronic line judge - Wikipedia

    en.wikipedia.org/wiki/Electronic_line_judge

    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 ...

  5. Disqualification (tennis) - Wikipedia

    en.wikipedia.org/wiki/Disqualification_(tennis)

    The incident led to a change in the rules of professional tennis to allow players to receive medical treatment during matches. [8] [9] 1996 Indianapolis Open, USA Andre Agassi: Daniel Nestor: Ball abuse and verbal abuse. [10] [11] 1997 Miami Open, USA Mariano Zabaleta: Adrian Voinea: Disqualified over hitting a line judge with a ball. [12] [13]

  6. Wimbledon tennis tournament replaces line judges with ...

    www.aol.com/wimbledon-tennis-tournament-ai-line...

    FILE - Switzerland's Stan Wawrinka jokes with a line judge in his Men's singles match against United States' Reilly Opelka during the Wimbledon Tennis Championships in London, Wednesday, July 3, 2019.

  7. Cyclops (computer system) - Wikipedia

    en.wikipedia.org/wiki/Cyclops_(computer_system)

    The system, which must be activated by the service line umpire before each serve, projects five or six infra-red horizontal beams of light along the court 10 mm above the ground. One beam covers the good (short) side of the service line and others cover the fault (long) side.

  8. Patten, Heliovaara shrug off contentious 1st set to win ... - AOL

    www.aol.com/foul-call-only-delays-italian...

    Henry Patten and Harri Heliovaara rallied from losing a contentious first set to win the Australian Open men's doubles title 6-7 (16), 7-6 (5), 6-3 over the Italian pairing of Simone Bolelli and ...

  9. Tennis court - Wikipedia

    en.wikipedia.org/wiki/Tennis_court

    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. [1]