the final round is the last stage of competition where the ultimate winner is decided. In most tournaments, this takes the form of a knockout stage, consisting of successive single-elimination matches that narrow the field down to a final championship game.

Structure of the final round
Knockout stage: In many tournaments, the final round is the climax of a knockout or single-elimination stage. The winner of each match advances, while the loser is eliminated. The field of remaining teams is whittled down through the round of 16, quarter-finals, and semi-finals before the final match.
Third-place match: Some competitions, such as the FIFA World Cup, also feature a third-place match. The losing teams from the semi-finals play against each other to determine who receives the bronze medal.
Final match: The main event of the final round is the championship match between the two teams that won their respective semi-final games.
Best-of series: the final round might be a "best-of" series, where two teams play multiple games to determine the champion. The team that wins the majority of the games (e.g., final match) is the winner.