What Does AD Mean in Tennis? Ad-In, Ad-Out, and Advantage Explained

If you’ve ever watched a tennis match and seen the score change from 40-40 to AD, you may have wondered what those two letters mean.

In tennis, AD means “advantage.” It appears after deuce, when one player or team wins the next point. That player now has a chance to win the game with one more point. However, the game isn’t over yet.

The terminology becomes even more useful when you understand Ad-In and Ad-Out. Ad-In means the server has the advantage, while Ad-Out means the receiver has the advantage. If the player with advantage wins the next point, the game ends. If the opponent wins it, the score returns to deuce.

That simple sequence explains most of what you need to know about AD in tennis. Still, tennis scoring has a few quirks that can make the system seem confusing at first.

Let’s break it down clearly.

Quick answer: AD in tennis means “advantage.” After a game reaches deuce, the player or team that wins the next point gets the advantage. They must win the following point to take the game.

What Does AD Mean in Tennis?

AD stands for “advantage” in tennis. It describes the score immediately after deuce when one player or team wins a point.

Under standard advantage scoring, a game reaches deuce when both sides have won three points. The score is announced as 40-40, although officials and players normally call it simply “deuce.”

The next point becomes an advantage.

If the server wins that point, the score is Ad-In. If the receiver wins it, the score is Ad-Out. The player or team with advantage is then only one point away from winning the game.

Here’s the basic sequence:

40-40 → Deuce → Advantage → Game

But there’s a catch.

If the player with advantage loses the next point, the game goes right back to deuce. The player doesn’t lose the entire game. They simply lose their temporary advantage.

That’s why a tennis game can move through several deuce-and-advantage cycles before someone finally wins it.

What does AD mean on a tennis scoreboard?

When you see AD on a tennis scoreboard, it generally means one side currently holds the advantage.

For example:

Scoreboard displays can vary. Some systems show AD, while others may display Advantage or another abbreviated format.

The important part is understanding the situation rather than memorizing a particular scoreboard design.

What Does Advantage Mean in Tennis?

Advantage in tennis is the point immediately after deuce that gives one side a temporary lead.

The word “temporary” matters.

At deuce, neither side has the required two-point margin to win the game. When one side wins the next point, that side gains the advantage.

Suppose two players reach deuce.

The server wins the next rally.

The score becomes Ad-In.

The server now needs one more point to win the game. If the receiver wins the next rally instead, the score returns to deuce.

So advantage isn’t the same as winning the game. It’s better thought of as a one-point lead in a game that requires a two-point margin.

The ITF explains that a player or pair must win four points to win a standard game, with a margin of at least two points. After deuce, the winner needs two consecutive points.

Why does tennis use advantage scoring?

Advantage scoring prevents a player from winning a game immediately after a 40-40 tie.

Once both sides reach three points, the game effectively resets into a two-point battle.

That creates this pattern:

Deuce → Point won → Advantage → Point won → Game

Or:

Deuce → Point won → Advantage → Point lost → Deuce

The second sequence can repeat as many times as necessary under standard advantage scoring.

How Does Tennis Scoring Work Before AD?

Understanding AD in tennis becomes much easier when you know how a regular game develops.

A standard tennis game uses this scoring progression:

The unusual part is the jump from 30 to 40 and the use of traditional terms such as “love” and “deuce.”

The ITF identifies the progression as Love, 15, 30, 40, Deuce, Advantage, and Game.

A player normally needs at least four points to win a game. However, simply reaching four points isn’t always enough.

For example:

• 40-0 + one point = game
• 40-15 + one point = game
• 40-30 + one point = game
• 40-40 = deuce, not game
• Deuce + point = advantage
• Advantage + point = game

The crucial distinction is the two-point margin.

What happens at 40-40?

At 40-40, the score is called deuce.

Both players have won three points, so neither has established the two-point margin needed to win the game.

The next point therefore doesn’t finish the game. Instead, it creates an advantage.

For example:

40-40 → Server wins → Ad-In

The server now has an advantage.

Or:

40-40 → Receiver wins → Ad-Out

The receiver now has an advantage.

From there, the next point decides whether the game ends or returns to deuce.

What Is Ad-In in Tennis?

Ad-In means the server has the advantage.

The term appears when the serving player wins the point immediately after deuce.

Imagine a game reaches 40-40.

The server wins a long rally.

The score becomes Ad-In.

That means the server is now one point away from winning the game.

If the server wins the next point, the game is over.

If the receiver wins it, the score returns to deuce.

USTA’s scoring guide defines the server winning the deuce point as Ad-In.

What is the Ad-In score?

The exact display can depend on the scoreboard, but the situation is straightforward:

Deuce → Server wins → Ad-In

The server has the advantage.

Here’s an example:

Now consider the alternative:

The second player didn’t win the game. They simply erased the server’s advantage.

Does Ad-In mean the server will win?

No.

Ad-In means the server has the advantage, not that the server has won.

That distinction matters when following live tennis.

A server can reach Ad-In and still lose the game. The receiver only needs to win one point to bring the score back to deuce.

What Is Ad-Out in Tennis?

Ad-Out means the receiver has the advantage.

The receiver earns Ad-Out by winning the point immediately after deuce.

For example:

40-40 → Receiver wins → Ad-Out

Now the receiver is one point away from winning the game.

If the receiver wins the following point, they break the server’s game.

If the server wins it, the score returns to deuce.

USTA describes the receiver winning the deuce point as Ad-Out.

What is the Ad-Out score?

The basic sequence looks like this:

Deuce → Receiver wins → Ad-Out → Receiver wins → Game

The receiver therefore needs two consecutive points from deuce to win the game.

That sounds simple, but the situation can become tense because the server can erase the advantage with one successful point.

Why is it called Ad-Out?

The terminology identifies which side holds the advantage.

Ad-In refers to the serving side holding advantage.

Ad-Out refers to the receiving side holding advantage.

The words don’t describe whether the point itself was good, aggressive, defensive, or unusual. They simply identify which side gained the advantage after deuce.

Ad-In vs. Ad-Out: What’s the Difference?

The easiest way to remember the difference is to focus on who won the point after deuce.

A useful memory trick is:

Ad-In = advantage for the server.
Ad-Out = advantage for the receiver.

The terminology is especially useful when watching a match without seeing the full scoreboard.

If a commentator says, “Ad-Out,” the receiving player or team has just won the point after deuce. That player now has a game-winning opportunity.

What Happens After Deuce in Tennis?

After deuce, the game enters a simple but potentially lengthy cycle.

Deuce to advantage

One player wins the next point.

That player gets advantage.

Deuce → Advantage

Advantage to game

The player with advantage wins the next point.

That player wins the game.

Advantage → Game

Advantage back to deuce

The player with advantage loses the next point.

The score returns to deuce.

Advantage → Deuce

This means a standard advantage game can continue for a long time.

Consider this example:

Deuce → Ad-In → Deuce → Ad-Out → Deuce → Ad-In → Game

Neither player won the first few advantage opportunities. Eventually, one player won two consecutive points from deuce and closed the game.

How Many Points Do You Need to Win After AD?

You need one more point after reaching advantage.

However, there’s an important distinction.

You need two consecutive points from deuce to win the game.

The first creates advantage.

The second wins the game.

So:

Deuce + one point = Advantage

Deuce + two consecutive points = Game

If the player with advantage loses the next point, they don’t lose the game. The score simply returns to deuce.

This rule explains why tennis games can become surprisingly long.

Examples of AD in Tennis Scoring

Examples make the scoring system much easier to understand.

Example: Ad-In leads to a game

Suppose the server and receiver are tied at deuce.

The server wins the next point.

Deuce → Ad-In

The server wins the next point too.

Ad-In → Game

The server has won two consecutive points after deuce.

Example: Ad-Out leads to a game

Now suppose the receiver wins the point after deuce.

Deuce → Ad-Out

The receiver wins another point.

Ad-Out → Game

The receiver has won two consecutive points after deuce.

Example: Ad-In returns to deuce

The server wins the first point after deuce.

Deuce → Ad-In

The receiver wins the next point.

Ad-In → Deuce

The server’s advantage disappears.

Example: Repeated advantages

A game could follow this pattern:

The game ends only when one side finally wins two consecutive points after deuce.

What Is the Difference Between Deuce and Advantage?

Deuce and advantage are connected, but they aren’t the same thing.

Think of deuce as a reset point.

Nobody has the required margin.

Advantage is the first step toward breaking that tie.

Does AD Mean Game Point?

Not exactly.

Advantage and game point can overlap, but they aren’t identical terms.

A game point is any point that could win the game for a player.

At Ad-In, the player with advantage has a point that can win the game. In that sense, the next point represents a game-winning opportunity.

However, AD itself means the score is currently at advantage.

This distinction becomes useful when reading tennis statistics or listening to commentary.

The safest rule is:

• AD = advantage
• Game point = an opportunity to win the game
• Deuce = neither side has the required margin

What Does AD Mean on a Tennis Scoreboard?

A scoreboard might display an advantage situation in several ways.

You could see:

• AD
• Ad
• Adv
• Advantage

The exact presentation depends on the scoring software or tournament display.

The underlying meaning remains the same: one side has won the point after deuce and now holds the advantage.

The order of the score also matters.

In standard tennis scoring, the server’s score is announced first. The ITF specifically states that the score of the serving player or pair is announced first.

For example, if the server has advantage, you might hear:

“Advantage, server.”

If the receiver has advantage, the chair umpire may announce:

“Advantage, receiver.”

That wording removes any ambiguity.

Does AD Always Mean the Server Has the Advantage?

No.

This is one of the most common misunderstandings about tennis scoring.

AD simply means advantage.

The advantage can belong to either side.

Ad-In

The server won the point after deuce.

Ad-Out

The receiver won the point after deuce.

So if you only see AD, look at the scoreboard context or listen to the official announcement to determine who holds it.

The USTA scoring system makes this distinction explicit.

What Does AD Mean in Tennis Doubles?

The same basic advantage scoring concept applies to doubles when the match uses standard scoring.

Instead of one player serving and receiving against another, each side has a team.

The team serving can hold Ad-In.

The receiving team can hold Ad-Out.

The important difference is simply that the advantage belongs to the team rather than an individual player.

For example:

Deuce → Serving team wins → Ad-In

If the serving team wins again, it wins the game.

Or:

Deuce → Receiving team wins → Ad-Out

If the receiving team wins again, it wins the game.

However, not every doubles competition uses traditional advantage scoring. Some formats use No-Ad scoring, which changes what happens after deuce.

What Is No-Ad Scoring in Tennis?

No-Ad scoring removes the traditional advantage sequence.

Instead of playing repeated deuce-and-advantage points, the game uses a deciding point after deuce.

The ITF rules recognize No-Ad as an alternative scoring method. Under that system, if each side has won three points, the score is deuce and one deciding point determines the game.

The receiver chooses which side of the court to receive from for that deciding point. In doubles, the receiving players cannot change positions for that point under the ITF procedure.

AD scoring vs. No-Ad scoring

The format matters because a viewer shouldn’t assume that every tennis match handles 40-40 identically.

For example, the ITF’s current FAQ says its World Tennis Tour singles main-draw matches use Ad scoring, while its doubles draw uses No-Ad scoring.

Does AD Affect the Set or Match Score?

AD occurs inside a game.

It doesn’t directly represent a set or match score.

Tennis scoring works in layers:

Points → Games → Sets → Match

The ITF describes a tennis match as being made up of sets, sets as collections of games, and games as collections of points.

For example:

Deuce → Ad-In → Game

That player has won a game, not a set.

The game then contributes to the set score.

If the set score becomes 5-4, for example, the player has won five games while the opponent has won four.

The AD itself disappears once the game ends.

What Is a Game Point in Relation to AD?

A game point is a point that could give a player the game if they win it.

At Ad-In, the player with advantage has exactly that opportunity.

For example:

Deuce → Server wins → Ad-In

The server now has a point that can finish the game.

If the server wins it:

Ad-In → Game

If the receiver wins it:

Ad-In → Deuce

That’s why advantage points can feel especially important during a match. A single rally can either close the game or erase the current lead.

How Does AD Relate to Tennis Strategy?

The basic scoring rule stays simple, but the situation creates an obvious tactical shift.

At Ad-In, the server knows one successful point ends the game.

At Ad-Out, the receiver knows one successful point wins the game.

That doesn’t create a separate scoring rule. It changes the immediate objective of the point.

A server at Ad-In may prioritize a reliable first serve and high-percentage pattern. A receiver at Ad-Out may look for a way to pressure the server’s second shot or attack a predictable serve.

Still, strategy shouldn’t be confused with the scoring definition.

AD is a scoring term first. Its strategic consequences come afterward.

Common Misunderstandings About AD in Tennis

“AD means the player won the game.”

False.

AD means the player has the advantage. They still need to win the next point.

“Ad-In means the receiver has the advantage.”

False.

Ad-In means the server has the advantage.

“Ad-Out means the game is over.”

False.

The receiver has the advantage but must win the next point to finish the game.

“A player only needs one point after 40-40.”

Not exactly.

The player needs two consecutive points after deuce.

The first gives advantage. The second wins the game.

“Every tennis match uses advantage scoring.”

False.

No-Ad scoring is an approved alternative procedure. Some competitions and formats use it instead.

“AD is the same as 40-40.”

No.

40-40 is deuce.

AD is the advantage that follows when one side wins the next point.

Tennis Scoring Terms Related to AD

If you’re learning tennis scoring, these terms form the core vocabulary.

Learning these terms makes tennis commentary much easier to follow.

Once deuce, Ad-In, and Ad-Out make sense, the scoring system stops looking nearly as strange.

AD in Tennis: Quick Reference

Here’s the entire concept at a glance:

The key sequence is worth remembering:

Deuce → Advantage → Game

Or, if the advantage disappears:

Deuce → Advantage → Deuce

That’s the heart of advantage scoring in tennis.

Frequently Asked Questions About AD in Tennis

What does AD mean in tennis?

AD means “advantage.” It occurs after deuce when one player or team wins the next point. That side needs one more point to win the game under standard advantage scoring.

What does Ad-In mean in tennis?

Ad-In means the server has the advantage. The server won the point immediately after deuce and can win the game by taking the next point.

What does Ad-Out mean in tennis?

Ad-Out means the receiver has the advantage. The receiver won the point after deuce and can win the game by winning the next point.

What happens after AD in tennis?

The player with advantage plays one more point. If they win, they take the game. If their opponent wins, the score returns to deuce.

How many points do you need after deuce?

Under standard advantage scoring, you need two consecutive points after deuce to win the game. The first gives you an advantage. The second wins the game.

Can AD go back to deuce?

Yes. If the player without advantage wins the next point, the score returns to deuce.

For example:

Deuce → Ad-In → Deuce

The game then starts another advantage cycle.

Is AD the same as advantage?

Yes. AD is the common abbreviation for advantage in tennis scoring. The USTA defines AD as short for Advantage.

Does AD mean game point?

Not exactly. At Ad-In or Ad-Out, the advantaged side has an opportunity to win the game with the next point. However, AD describes the score, while game point describes the winning opportunity.

What does AD mean in tennis doubles?

In doubles using standard advantage scoring, AD indicates that one team has the advantage after deuce. Ad-In means the serving team has it, while Ad-Out means the receiving team has it.

Does No-Ad tennis use AD?

No. In No-Ad scoring, deuce is followed by a deciding point rather than a traditional advantage sequence. The winner of that point wins the game.

Why does tennis use Ad-In and Ad-Out?

The terms quickly identify which side gained the advantage after deuce. Ad-In refers to the server, while Ad-Out refers to the receiver.

Final Takeaway: What Does AD Mean in Tennis?

So, what does AD mean in tennis?

It means advantage.

The term appears after deuce when one player or team wins the next point. That side now needs one more point to win the game.

Remember these three rules:

• AD = Advantage
• Ad-In = Server has the advantage
• Ad-Out = Receiver has the advantage

Under standard scoring, the sequence is:

40-40 → Deuce → Advantage → Game

If the advantaged player wins the next point, the game ends. If the opponent wins, the score goes back to deuce.

That’s why a tennis game can swing back and forth several times before someone finally closes it out.

Once you understand deuce, Ad-In, and Ad-Out, the mysterious “AD” on a tennis scoreboard becomes much easier to read. And when a commentator says “advantage,” you’ll know exactly what has happened and what needs to happen next.

Charlotte Pembroke

Charlotte Pembroke is a British writer and cultural commentator who specialises in the history and evolution of the English language. Raised in Cambridge, England, she built a career around making language and communication more accessible to everyday readers through informative and engaging books. Her writing blends historical facts with modern examples, helping readers appreciate the stories behind common words and phrases. Charlotte has written for educational magazines, participated in literary conferences, and continues to research how language influences society and culture. Outside her professional work, she enjoys reading classic novels, visiting museums, and mentoring aspiring writers.

Books:

• The Hidden Stories of English Words
• Understanding Meaning in Modern Language