The best of three, five, etc.
Definition 1 of 2

Sports Tournaments
Commonly used in sports to explain how many wins one needs to claim victory in a series.

The World Series is the best of seven games.
Not Literal
Doesn't mean to literally play three or five times, but to play until someone wins the majority.

The chess competition is the best of five games, so the first to win three is the champion.
Series Completion
All games in the series are not always played if a winner is decided early.

They won the best of five series in three straight wins.
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