A Cricket Ground is a large circular playing field of grass that is not always defined in size. The field is defined by three main areas of play; the outfield and infield are the two largest, and are divided by a circular line. At the center is the close infield is a square or rectangular area called the cricket pitch that is divided from the infield by a series of dots or another white line. Two lines called creases are painted along the pitch, and help determine whether a pitch or hit is within the playing rules of the game.