A tennis match that reaches a score of 6-6 in a set is referred to as a tiebreaker. In this case, players compete to win a game under pressure with specific rules: usually, the first player to reach 7 points with at least a 2-point lead wins the tiebreaker. This format speeds up the match and adds an exciting, decisive component. Tiebreakers can occur in any set if players are evenly matched, leading to tense and crucial moments in the game, especially during high-stakes matches like Grand Slams.