The dimensions given are for professional and professional-style games. A baseball game is played between two teams, each composed of nine players, that take turns playing offense (batting and baserunning) and defense (pitching and fielding).
A pair of turns, one at bat and one in the field, by each team constitutes an inning.
A run is scored when a runner legally advances around the bases in order and touches home plate (the place where the player started as a batter).
The team that scores the most runs by the end of the game is the winner.
The first objective of the batting team is to have a player reach first base safely.
A player on the batting team who reaches first base without being called "out" can attempt to advance to subsequent bases as a runner, either immediately or during teammates' turns batting.
The players on the team at bat attempt to score runs by circling or completing a tour of the four bases set at the corners of the square-shaped baseball diamond.
A player bats at home plate and must proceed counterclockwise to first base, second base, third base, and back home to score a run.
The other team—customarily the home team—bats in the bottom, or second half, of every inning.
The goal of the game is to score more points (runs) than the other team.