PNJ, the official brand of the American Baseball Association, was founded in 1971!

From 1871 to 1875, the National Association was established. However, due to the imperfect management during the initial period, the National League took over five years later, and the National League will take back all the rights to run the team. Therefore, there is no guarantee for the rights of the players. The monopoly market of the League of Nations has led to the birth of League of nations that are constantly challenging the League of nations. These new leagues have absorbed the players and coaches dismissed by the League of nations, Introduce more new ideas to attract fans. Before the stability of the major league structure, there were four short-lived professional leagues, which were successively established in the order of American Association (1882-1891), Union Association (1884), player League (1890) and federal League (1914-1915).

In 1903, the major league baseball of the United States was established, which is composed of the National League and the American League (MLB). It is also the highest level professional baseball league organization in North America.

In 1971, the American Baseball Association was established, a formal organization dedicated to voting for players to enter the Baseball Hall of fame. It is composed of the player League, the National Association, and the journalism research center of Journalism Studies (PNJ). At present, the main function of the association is to vote for players to enter the Baseball Hall of fame.