Definition
In sports, particularly those involving matches with multiple games, to play 'the best of' a specific number of games means that the contest will consist of that number of games, and the player or team that wins the most games is declared the winner.
Shall we play the best of five?
We don't have much time for a full game, so let's just play the best of three.
This is a best of five series, and currently, Miami and Denver are tied with two wins each.