A baseball field is composed of an infield and an outfield. The infield is dominated by four bases laid out in the shape of a diamond, with the home plate at the bottom tip. The bases are 90 feet apart. Between the home plate and second base, 60 feet 6 inches from the plate, is the pitchers mound, which is elevated, sloping down from 2 feet above the rest of the field.

Each team fields nine players at a time. Substitutions may be made at any time, but players who have been replaced may not return. Play is initiated when the pitcher throws the ball and the batter, who is waiting at home plate, tries to hit it with a bat. The offensive team attempts to score runs; the defensive team attempts to record outs. A run is scored when an offensive player succeeds, by various means, from home plate to first base to second base to third base and back to home plate again. An out can be recorded in several ways.

The most common ways occur when

1. a batter hits the pitched ball and a defensive player catches it before it touches the ground,
2. the batter hits the ball on the ground and a fielder throws the ball to the first batsman who touches first base before the batter reaches first base.,
3. the batter or a runner is touched by a fielder holding the ball while the batter is touched by a fielder holding the ball while the batter or runner is between bases,
4. a runner is forced out at second base, third base, or home plate in the same manner that a batter is thrown out at first base,
5. the batter strikes out. When three outs are recorded, the teams change sides. When both sides have had a turn at bat, it is called an inning. A games lasts nine innings; if the teams are tied after nine innings, extra innings are played until one team is ahead at the end on an innings.

Olympic baseball differs from major league professional baseball in several minor ways:

1. if one team is ahead by ten or more runs after 7 or 8 innings, a winner is declared without finishing the game.,
2. a designated hitter is used in all games,
3. non-wooden bats are allowed, and
4. only one infielder at a time may visit the pitcher at the pitcher's mound, and only one such visit may be made during an inning.

Baseball was introduced into the Olympics in 1912. It will be held in the Baseball Stadium and the Baseball Centre in Aquilina Reserve, Blacktown. These places can be located in Sydney Olympic Park and Sydney's West.

Baseball:Top 3 Countries

	G	S	B	Total
Cuba	1	-	-	1
Chinese Taipei	-	1	-	1
Japan	-	-	-	1