The sport played in a series of sets is tennis. Matches can be played in varying formats, typically consisting of best-of-three or best-of-five sets. Each set is won by the first player or team to reach six games, with a required margin of two games. Players must demonstrate skill in various strokes and strategies to win points and games. Mastery of the game involves physical endurance and mental focus, as matches can sometimes last several hours, making it a physically and mentally demanding sport.