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:tvb now,tvbnow,bttvb+ G' G; p5 x3 G8 M2 M
; f& I# p- r8 m/ J, c( P公仔箱論壇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). * `. w: |2 G- f" [3 [# R
The outfield is the grassed area beyond the infield grass line between the foul lines, and bounded by a wall or fence.
- i' f$ X/ |0 \" ^: ]tvb now,tvbnow,bttvbFoul territory is the entire area outside the foul lines. |