This league has the inside moves to score big with hoops fans. The National Basketball Association is one of the four major professional sports leagues in North America, with 30 teams representing 28 US markets and one in Canada. It oversees the rules of the game and officiating, markets its teams and players, and regulates franchise ownership. The NBA also licenses broadcasting rights and collects revenue from corporate sponsorships. In addition, it operates the WNBA, a 12-team women's league; the NBA Development League for up-and-coming players; and NBA TV, a cable TV channel offering news, original programming, and live game broadcasts. The NBA was founded as the Basketball Association of America in 1946.