Professional baseball is a sport played by teams of nine players who compete to score runs by hitting a ball and running around bases. The game is played on a diamond-shaped field, with a pitcher's mound at the center and bases at each corner. Major League Baseball (MLB) is the highest level of professional baseball in the United States, featuring teams like the New York Yankees and Los Angeles Dodgers. Players in professional baseball are highly skilled and often train for years to reach this level. The season typically runs from April to October, culminating in the World Series, where the champions of the American League and National League face off for the championship title.