The National Basketball Association (NBA) Finals is the championship series for the NBA and the end of its postseason. All Finals Are played in a best-of-seven format, and are contested between the winners of the Eastern Conference and the Western Conference (previously Divisions before 1970), except in 1950 when the Eastern Division champion faced the winner between the Western and Central Division champions. From 1946 through 1949, when the league was known as the Basketball Association of America (BAA), the playoffs were a three-stage tournament where the two semifinal winners played each other in the finals.  this series’ winning team receives the Larry O’Brien Championship Trophy.
The present home-and-away format at the NBA Finals is 2–2–1–1–1 (the team with the superior regular-season record plays in their home court in Games 1, 2, 5, and 7), that has been utilized in 1947–1948, 1950–1952, 1957–1970, 1972–1974, 1976–1977, 1979–1984, and 2014–present. It was previously in a 2–3–2 format (the team with the better regular season record plays in their home court in Games 1, 2, 6, and 7) during 1949, 1953–1955, and 1985–2013, in a 1–1–1–1–1– 1 — 1 1–1 format during 1956 and 1971, and at a 1–2–2–1–1 — 1 format throughout 1975 and 1978. 
The Eastern Conference/Division directs the Western Conference/Division in string won (39–34). The defunct Central Division, in presence throughout the 1949–50 NBA season when the NBA was divided into three divisions and different from the Central Division created in 1970 when the then present Eastern Division was updated as a conference, won one championship. The Boston Celtics and the Minneapolis/Los Angeles Lakers own nearly half of those names, having won a joint 33 of 73 championships. The defending champions are the Toronto Raptors, which makes history as the first team from outside the United States to acquire, as of 2019.
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