What is 'advantage' (ad) used to indicate in tennis scoring?

The player who won the point after deuce

Under 'no-ad' scoring, how is a game decided when the score reaches deuce (40–40)?

A single deciding point is played

Play continues until two-point lead

Winning a game when the opponent is serving

Winning a game on your own serve

Play continues until one player leads by two games

A 7-point tiebreak is played at 6–6

The final set is reduced to first to 4 games

A single deciding point is played at 6–6

Trivia · Knowledge

Twelve questions on standard and variant tennis scoring: points, games, sets, tiebreaks, advantage and no-ad rules.0 takes

Preview · 12 questions

01In standard tennis scoring, what is the sequence of point scores within a game for a player who wins successive points from love?
02What term is used when both players have won three points each in a game (40–40)?
03After deuce, what must a player win to immediately win the game in traditional scoring?
04If a player wins one point after deuce but then loses the next point, what is the score called?
05What is 'advantage' (ad) used to indicate in tennis scoring?
06Under 'no-ad' scoring, how is a game decided when the score reaches deuce (40–40)?
07In standard tournaments, at what set score is a tiebreak most commonly played to decide the set?
08A conventional tiebreak used to decide a set is usually played to how many points (winning by two)?
09What is a 'match tiebreak' (also called a super tiebreak) commonly played to when used instead of a final set?
10Which scoring variation is commonly used in doubles to shorten matches: instead of a third set, players play a match tiebreak to 10 points or they play a full third set?
11What does winning a 'break of serve' mean?
12Some tournaments use an 'advantage set' in the final set. What distinguishes an advantage final set from one decided by a tiebreak at 6–6?