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  2. 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]

  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. USTA Billie Jean King National Tennis Center - Wikipedia

    en.wikipedia.org/wiki/USTA_Billie_Jean_King...

    The USTA Billie Jean King National Tennis Center is a stadium complex within Flushing Meadows–Corona Park in Queens, New York City, New York. It has been the home of the US Open Grand Slam tennis tournament, played every year in August and September, since 1978 and is operated by the United States Tennis Association (USTA). [ 1 ]

  5. Real tennis - Wikipedia

    en.wikipedia.org/wiki/Real_tennis

    Unlike lawn tennis, at least one foot must be grounded during the service, but the player may serve from anywhere in the court between the dedans wall and the second gallery line. The serve is played onto the service penthouse, and must touch the service penthouse at least once on the receiver's (hazard) side of the court.

  6. Hatch mark - Wikipedia

    en.wikipedia.org/wiki/Hatch_mark

    Hatch marks (also called hash marks or tick marks) are a form of mathematical notation. They are used in three ways as: Unit and value marks — as on a ruler or number line; Congruence notation in geometry — as on a geometric figure; Graphed points — as on a graph; Hatch marks are frequently used as an abbreviation of some common units of ...

  7. InnerCity Tennis nominated to run health and wellness hub at ...

    www.aol.com/innercity-tennis-nominated-run...

    An additional 20,000-40,000 square feet of space would be set aside for other wellness-related uses that could include a cafe, shops, a salon or fitness center.

  8. Hardcourt - Wikipedia

    en.wikipedia.org/wiki/Hardcourt

    Tennis hardcourt, Curtiss Park, Saline, Michigan A hardcourt (or hard court) is a surface or floor on which a sport is played, most usually in reference to tennis courts.It is typically made of rigid materials such as asphalt or concrete, and covered with acrylic resins to seal the surface and mark the playing lines, while providing some cushioning.

  9. 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.