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The National Basketball Association (abbreviated NBA) is an American-Canadian professional basketball league. The league is an active member of USA Basketball, a division of the Fédération Internationale de Basketball in the United States. 1)
The Basketball Association of America (BAA) was established in 1946 and the first game was played between the Toronto Huskies and the New York Knickerbockers. The BAA and the National Basketball League (NBL) combined in 1949 and became the National Basketball Association. 2)
The NBA consists of 30 teams. They are separated into the Eastern Conference and the Western Conference. There are three divisions of five teams in each conference. 3)
Each team in the NBA plays 82 regular-season games. They play 41 games at home and 41 away. During the season, every team in the NBA plays every other team at least once. 4)
There were only two games played on Christmas Eve throughout the entire history of the NBA - in 1960 and 1967.5)