The 1986 NBA Playoffs was the postseason tournament of the National Basketball Association's 1985-86 season. The tournament concluded with the Eastern Conference champion Boston Celtics defeating the Western Conference champion Houston Rockets, four games to two, in the NBA Finals. The NBA Playoffs are four rounds of competition between sixteen teams in the Eastern Conference and Western Conferences (called Divisions, pre-1970) of the National Basketball Association. ... The National Basketball Association (NBA) is the worlds premier mens professional basketball league and one of the major professional sports leagues of North America. ... The 1985-86 NBA Season was the 40th season of the National Basketball Association. ... The Eastern Conference of the National Basketball Association is made up of fifteen teams, and organized in three divisions of five teams each. ... The Boston Celtics are a professional basketball team based in Boston, Massachusetts. ... The Western Conference of the National Basketball Association is made up of fifteen teams, and organized in three divisions of five teams each. ... The Houston Rockets are a professional basketball team based in Houston, Texas. ... The 1986 NBA Finals was the championship round of the 1985-1986 NBA season The Boston Celtics won the series over the Houston Rockets four games to two. ...