American sports Championships are generally played as a best of 7 series. Based on your performance in the league table during the regular season, whoever has the better record between the two teams gets to play up to 4 games in their home city and up to 3 in the opponent’s city. The extra home game and the related benefits of having your own fans, familiar gameday experiences, sleeping in your own bed the night before etc etc is generally considered home court advantage.
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