Baseball is played between two teams of nine players each on a baseball field, under the authority of one or more officials, called umpires. There are usually four umpires in major league games; up to six (and as few as one) may officiate depending on the league and the importance of the game. There are four bases. Numbered counter-clockwise, first, second and third bases are cushions (sometimes informally referred to as bags) shaped as 15 in (38 cm) squares which are raised a short distance above the ground; together with home plate, the fourth "base," they form a square with sides of 90 ft (27.4 m) called the diamond. Home base (plate) is a pentagonal rubber slab known as simply home. The playing field is divided into three main sections:5.39.217.76: X% x1 r. x3 K/ `; `4 K
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The infield, containing the four bases, is for general defensive purposes bounded by the foul lines and within the grass(or AstroTurf) line (see figure). 公仔箱論壇3 `: k+ U# A& L/ d
The outfield is the grassed area beyond the infield grass line between the foul lines, and bounded by a wall or fence. 5 C* Q+ ^6 \ Z4 J1 Q1 v
Foul territory is the entire area outside the foul lines. |