Playing field
A playing field is a field used for playing sports or games. They are generally outdoors, but many large structures exist to enclose playing fields from bad weather. Generally, playing fields are wide expanses of grass
Grasses, or more technically graminoids, are monocotyledonous, usually herbaceous plants with narrow leaves growing from the base. They include the "true grasses", of the Poaceae family, as well as the sedges and the rushes . The true grasses include cereals, bamboo and the grasses of lawns ...

, dirt
Soil is a natural body consisting of layers of mineral constituents of variable thicknesses, which differ from the parent materials in their morphological, physical, chemical, and mineralogical characteristics...

 or sand
Sand is a naturally occurring granular material composed of finely divided rock and mineral particles.The composition of sand is highly variable, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal...

 without many obstructions. More recently, some types of fields have begun using a synthetic
Synthetic fiber
Synthetic fibers are the result of extensive research by scientists to improve on naturally occurring animal and plant fibers. In general, synthetic fibers are created by forcing, usually through extrusion, fiber forming materials through holes into the air, forming a thread...

 grass-like material called AstroTurf
AstroTurf is a brand of artificial turf. Although the term is a registered trademark, it is sometimes used as a generic description of any kind of artificial turf. The original AstroTurf product was a short pile synthetic turf while the current products incorporate modern features such as...

, but its use is often controversial. Today a lot of fields have Next Turf, ProGreen or Field Turf. These Turfs are filled with rubber and/or sand.

There are a variety of different commonly used fields, including:
  • American football field
  • Association football (soccer) pitch
    Association football pitch
    An association football pitch is the playing surface for the game of association football made of turf. Its dimensions and markings are defined by Law 1 of the Laws of the Game, "The Field of Play".All line markings on the pitch form part of the area which they define...

  • Australian rules football playing field
    Australian rules football playing field
    An Australian rules football playing field is a venue where the sport of Australian rules football is played.The playing field is typically a large oval-shaped grass surface . These fields may vary especially for variations of the game...

  • Baseball field
    Baseball field
    A baseball field, also called a ball field or a baseball diamond, is the field upon which the game of baseball is played. The terms "baseball field" and "ball field" are also often used as synonyms for ballpark.-Specifications:...

  • Cricket field containing the cricket pitch
    Cricket pitch
    In the game of cricket, the cricket pitch consists of the central strip of the cricket field between the wickets - 1 chain or 22 yards long and 10 feet wide. The surface is very flat and normally covered with extremely short grass though this grass is soon removed by wear at the ends of the...

  • Lacrosse field
  • Rugby league playing field
    Rugby league playing field
    The rugby league playing field, also referred to as a pitch or paddock, is the playing surface for the sport of rugby league football and is surfaced exclusively with grass....

     (pitch or paddock)
  • Rugby union playing field (pitch or paddock)

In other sports, the field of play is called a "court":
  • basketball court
    Basketball court
    In basketball, the basketball court is the playing surface, consisting of a rectangular floor with tiles at either end. In professional or organized basketball, especially when played indoors, it is usually made out of a wood, often maple, and highly polished...

  • tennis court
    Tennis court
    A tennis court is where the game of tennis is played. It is a firm rectangular surface with a low net stretched across the center. The same surface can be used to play both doubles and singles.-Dimensions:...

  • volleyball court
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