What Does 'A' Mean in Tennis? Advantage Explained

By Emma Wilson · December 22, 2029

In tennis, 'A' stands for 'advantage,' indicating the player who wins the next point after deuce (40-40) gains the upper hand. If they win the following point, they win the game; if they lose it, the score returns to deuce. This scoring rule is fundamental in professional and amateur matches.

Understanding the Meaning of 'A' in Tennis Scoring

The letter 'A' in tennis represents 'advantage.' It is used when a player wins a point immediately after the score reaches deuce (40-40). At this stage, the game cannot be won by just one point—two consecutive points are required. The first of these points gives the player 'advantage,' marked as 'Ad' or simply 'A' on the scoreboard.

When Does 'A' Appear in a Game?

After the score reaches deuce (40-40)
When a player wins the next point after deuce
Only during games where the score is tied at 40-40 and beyond
It resets back to deuce if the advantaged player loses the next point

How Advantage Works in a Tennis Game

Tennis scoring follows a unique pattern: 0 (love), 15, 30, 40, and game. When both players reach 40, the score becomes deuce. From deuce, a player must win two consecutive points to claim the game. Winning the first point after deuce grants them 'advantage.'

Scoring Sequence from Deuce

Score: 40-40 (Deuce)
Player A wins point → Score: Ad-A (Advantage Player A)
If Player A wins next point → Game to Player A
If Player B wins next point → Score returns to Deuce

This system ensures that a player must demonstrate clear superiority by winning two points in a row after a tie at 40-40.

Visual Representation of Tennis Scoring with 'A'

Point Sequence	Player A Score	Player B Score	Status
Start	0	0	Love-Love
1	15	0	15-Love
2	15	15	15-All
3	15	30	15-30
4	30	30	30-All
5	40	30	40-30
6	40	40	Deuce
7	A	-	Ad-In (Player A)
8	-	-	Game to Player A (if wins point 8)

Table data source:1, 2

The table illustrates how 'A' appears only after deuce and signifies a transitional state toward winning the game. It shows that advantage is not a final score but a conditional lead requiring confirmation by winning the next point.

Common Misconceptions About 'A' in Tennis

'A' means automatic win: False. The player with advantage must win the next point to secure the game.
'A' is used in all scoring situations: No. It only applies after deuce.
'A' always favors the server: Not necessarily. 'Ad-In' means server has advantage; 'Ad-Out' means receiver has advantage.

Frequently Asked Questions About 'A' in Tennis

What does 'A' mean on a tennis scoreboard?

'A' stands for 'advantage' and indicates which player has won the point immediately after deuce. If the server has the advantage, it's often labeled 'Ad-In'; if the receiver does, it's 'Ad-Out'.

What happens if the player with advantage loses the next point?

If the player with advantage loses the next point, the score returns to deuce. Both players must then continue playing until one wins two consecutive points.

Is 'A' the same as game point?

No. While having advantage puts a player one point away from winning the game, it is not guaranteed. They must still win the next point. Game point refers to any situation where the next point could end the game, including advantage scenarios.

Why doesn't tennis use '41' instead of 'A' after deuce?

Tennis uses traditional terms like 'advantage' instead of numerical scores to preserve historical scoring conventions. Using 'A' emphasizes the special nature of post-deuce play and avoids confusion with standard point values.

Can you win a game directly from deuce without getting 'A'?

No. To win a game from deuce, a player must win two consecutive points. The first point gives them 'advantage' ('A'), and the second wins the game. Winning both points without losing any is required.