Double elimination is a tournament format where a participant must lose two matches before being eliminated from the competition. This means that even if a player loses their first match, they still have a chance to continue competing by moving to the "losers' bracket." If they win all their subsequent matches in this bracket, they can still reach the finals. In the finals, the player from the winners' bracket faces the player from the losers' bracket. If the player from the losers' bracket wins, a final match is held to determine the overall champion. This format is popular in sports like wrestling and video game tournaments.