The NBA Finals is the yearly championship series of the National Basketball Association (NBA). The Eastern and Western conference champions play a best-of-seven game series to ascertain the league champion. The champions of these Finals are given the Larry O’Brien Championship Trophy, which replaced the Walter A. Brown Trophy in 1983.
The series was initially Called the BAA Finals prior to the 1949–50 year when the Basketball Association of America (BAA) united with the National Basketball League (NBL) to form the NBA. The contest oversaw additional name changes to NBA World Championship Series from 1950 to 1985, as well as a brief stint as the Showdown, before settling on NBA Finals in 1986. 
The NBA Finals was initially structured in a 2–2–1–1–1 format. In 1985, to ease the amount of cross-country travel, it had been changed to a 2–3–2 format, in which the first two and final two matches of the series have been played in the stadium of the group who earned home-court benefit by getting the better record during the regular season. The two –2–1–1–1 structure has been restored. The first two matches are played with the higher-seeded team’s home, the following two in the home of the lower-seeded team, and the remaining three are played in each team’s home arena . 
A total of 19 franchises have won the NBA Finals, with the Toronto Raptors winning in 2019. The Boston Celtics maintain the record for the most victories, having won the competition 17 times, as well as the most consecutive titles, winning 8 occasions from 1959 to 1966. The Los Angeles Lakers have contested the NBA Finals the many times, with 31 appearances. The Eastern Conference has provided the most champions, with 38 wins from 10 franchises; the Western Conference has 32, from 9 franchises.
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