Professional sports

Professional sports, as opposed to amateur sports, are sports in which athletes receive payment for their performance. Professional athleticism has come to the fore through a combination of developments. Mass media and increased leisure have brought larger audiences, so that sports organizations or teams can command large incomes. As a result, more sportspeople can afford to make athleticism their primary career, devoting the training time necessary to increase skills, physical condition, and experience to modern levels of achievement. This proficiency has also helped boost the popularity of sports.

Most sports played professionally also have amateur players far outnumbering the professionals.

Baseball originated before the American Civil War (1861-1865). A humble game played on sandlots in particular, scoring and record-keeping gave baseball gravity. "Today," notes John Thorn in The Baseball Encyclopedia, "baseball without records is inconceivable."

In 1871 the first professional baseball league was created. By the beginning of the 20th century, most large cities in the eastern United States had a professional baseball team. The teams were divided into two leagues, the National and American teams. During the regular season, a team played only against other teams within its league. The most victorious team in each league was said to have won the "pennant;" the two pennant winners met after the end of the regular season in the World Series. The winner of at least four games (out of a possible seven) was the champion for that year. This arrangement still holds today, although the leagues are now subdivided and pennants are decided in post-season playoff series between the winners of each division.

Baseball became popular in the 1920s, when Babe Ruth led the New York Yankees to several World Series titles and became a national hero on the strength of his home runs (balls that cannot be played because they have been hit out of the field). One of the most noteworthy players was the Brooklyn Dodgers' Jackie Robinson, who became the first African-American player in the major leagues in 1947. Prior to Robinson, black players had been restricted to the Negro League.

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