Answer : 2. "Advantage out"
Explanation :

Tennis is a game played on a rectangular-shaped court, which can be one of many surfaces. It is either played with two players (singles match), or four players (doubles match). Players stand on opposite sides of the net and use a stringed racquet to hit the ball back and forth to each other. Most tennis matches are played in a best-of-three format, which means that players need to win 2 sets to win the match. The score when the receiver wins the next point after deuce Advantage out. In Grand Slams, men play best-of-five sets while women play best-of-three sets. Doubles matches are best-of-3 with a 10-point tiebreak in lieu of the third set. USTA and club matches are usually best-of-3. There are two main ways of scoring a set. Advantage Set In an advantage set, a player or team needs to win six games, by two, to win the set. This means that there is no tiebreak game played at 6-6. The set continues until one player/team wins by two games. Tiebreak Set In a tiebreak set, a player or team needs to win six games wins a set. If the score gets to 5-5 (5-all), one player must win the next two games to win the set. If the score reaches 6-6 (6-all) in the set, a tiebreak game is played.