The American Basketball Association (ABA) was a major professional basketball league that operated for nine seasons from 1967 to 1976. The upstart ABA operated in direct competition with the more established National Basketball Association throughout its existence. The second of two leagues established in the 1960s after the American Basketball League, the ABA was the more successful rival to the NBA.
The league started with eleven teams; the Indiana Pacers, Kentucky Colonels, Minnesota Muskies, New Jersey Americans, and Pittsburgh Pipers were placed in the Eastern Division and the Anaheim Amigos, Dallas Chaparrals, Denver Rockets, Houston Mavericks, New Orleans Buccaneers, and Oakland Oaks in the Western Division.