Baseball Positions

1 PITCHER
In baseball, the pitcher is the player who throws the baseball from the pitcher's mound toward the catcher to begin each play, with the goal of retiring a batter, who attempts to either make contact with the pitched ball or draw a walk.

2 CATCHER
Catcher is a position for a baseball or softball player. When a batter takes his turn to hit, the catcher crouches behind home plate, in front of the (home) umpire, and receives the ball from the pitcher. This is a catcher's primary duty, but he is also called upon to master many other skills in order to field his position well. The role of the catcher is similar to that of the wicket-keeper in cricket.

3 FIRST BASEMAN
First base, or 1B, is the first of four stations on a baseball diamond which must be touched in succession by a baserunner in order to score a run for that player's team. A first baseman is the player on the team playing defense who fields the area nearest first base, and is responsible for the majority of plays made at that base.

4 SECOND BASEMAN
Second base, or 2B, is the second of four stations on a baseball diamond which must be touched in succession by a base runner in order to score a run for that player's team. A second baseman is the baseball player guarding second base. Also called second bagger, the second baseman often possesses quick hands and feet, needs the ability to get rid of the ball quickly, and must be able to make the pivot on a double play.

5 THIRD BASEMAN
A third baseman, abbreviated 3B, is the player in baseball whose responsibility is to defend the area nearest to third base — the third of four bases a baserunner must touch in succession to score a run.

6 SHORTSTOP
Shortstop, abbreviated SS, is the baseball or softball fielding position between second and third base. Shortstop is often regarded as the most dynamic defensive position in baseball, because there are more right-handed hitters in baseball than left-handed hitters, and most hitters have a tendency to pull the ball slightly, so more balls go to the shortstop than any other position.
  
OUTFIELDER
An outfielder is a person playing in one of the three defensive positions in baseball, farthest from the batter. These defenders are the left fielder, the center fielder, and the right fielder. An outfielder's duty is to try to catch long fly balls before they hit the ground or to quickly catch or retrieve and return to the infield any other balls entering the outfield. Outfielders normally play behind the six other members of the defense who play in or near the infield.

7 & 9 RIGHT AND LEFT FIELDER
Right fielders tend to have the best throwing arms of the outfield so they can make the long throw to third base, but often are not as fast as left fielders.

8 CENTER FIELDER
Center fielders are generally the fastest and most athletic of the three, because they have to run the farthest in order to field balls in the gaps and back up the other outfielders when balls are hit to them.

*from wikipedia.org