Baseball, competitive game of skill played with a hard ball and bat between two teams of nine players each. Baseball is often called the national pastime of the United States, because of its strong tradition and great popularity. It is played throughout the world by people of all ages.
Baseball is one of the oldest and most popular spectator sports. The game as it is known today developed during the early 1800s among children and amateur players. Today, professional baseball attracts millions of spectators to ballparks each year and entertains millions more through radio and television broadcasts.