# How Tennis Scoring Works

> Tennis uses an unusual ladder of points, games, sets and matches, complete with love, deuce and tie-breaks. This is a clear, beginner-friendly guide to how it all fits together.

*Section: Sports — By Tom Bennett (Sports Writer) — Published June 4, 2024 — 6 min read*

Canonical URL: https://dailyjunction.co.uk/sports/how-tennis-scoring-works
Tags: tennis, scoring, rules, deuce, tie-break

## Key takeaways

- Tennis scores climb through four levels: points build a game, games build a set, and sets decide the match.
- Within a game, points are counted 15, 30, 40 and then game, with zero called love.
- At 40-40 (deuce) a player must win two points in a row - advantage, then the game - to take it.
- A set is usually won by reaching six games with a two-game lead, with a tie-break settling it at 6-6.
- Men's Grand Slam matches are best of five sets; almost everything else is best of three.

To a newcomer, tennis can sound as though it is being scored in another language. Fifteen, thirty, forty, deuce, advantage, love - the umpire calls out numbers that do not count in any normal order, and the match is divided into points, games and sets that all seem to end at different moments. Yet beneath the odd vocabulary sits a tidy, logical structure. Once you see how the layers stack up, the scoring becomes easy to follow, and the strange numbers turn into part of the sport's charm.

## What it is

**Tennis scoring is a four-level system in which points are won to build a game, games are won to build a set, and sets are won to decide the match.** Each level has its own finishing line, and you climb the ladder one rung at a time: collect enough points and you bank a game; collect enough games and you bank a set; win enough sets and you win the whole contest.

The complication that throws people is not the structure but the *labels*. Points are not counted one, two, three; they are called fifteen, thirty, forty. And several rungs of the ladder require you to win by a margin rather than simply reaching a target. Take those two wrinkles in turn and the whole thing comes clear.

## Level one: points and the strange numbers

The smallest unit is the **point**, won on each rally. But instead of counting points as 1, 2, 3, 4, tennis uses its own sequence:

| Points won | Called |
| --- | --- |
| 0 | Love |
| 1 | 15 |
| 2 | 30 |
| 3 | 40 |
| 4 | Game (usually) |

So a player who has won two points and lost one leads "thirty-fifteen". The server's score is always read out first, which is why the same scoreline can be called either way depending on who is serving.

Two words need translating. **Love** simply means zero - a game at 40-0 is "forty-love". And the leap from 40 to "game" is where the margin rule first appears, because you cannot always win a game just by reaching four points.

## Deuce and advantage: winning by two

Here is the first real twist. To win a game you must both reach four points and be **two points clear**. If both players reach 40, the score is not "forty-all" but **deuce** - and from deuce, a single point is not enough.

From deuce, the player who wins the next point has **advantage**. If they then win the following point as well, they take the game. But if they lose it, the score slides back to deuce, and the duel begins again. A tight game can swing through deuce and advantage many times before someone finally wins two points back to back. This "win by two" idea is the engine of tennis's tension, and it returns at higher levels too.

## Level two: games into a set

Win a game and you have climbed the first rung. Now you start collecting **games** to win a **set**. The standard target is **six games**, but - you will have guessed it - you must again win by a margin of two.

So:

- Reach six games with your opponent on four or fewer, and you win the set (6-4, 6-2, 6-0, and so on).
- Reach 6-5 and you must win one more for 7-5; if your opponent levels at 6-6, the set does not simply continue forever.

That 6-6 scoreline is where the **tie-break** steps in, the mechanism designed to stop sets dragging on indefinitely.

> The repeated "win by two" rule is the thread running through tennis. A point at deuce, a set at 5-5, a tie-break at 6 points all - again and again the game refuses to let you win by the narrowest possible margin, which is exactly what makes close matches so gripping.

## The tie-break: settling 6-6

At six games all, players contest a **tie-break** to decide the set. The scoring here is refreshingly normal: points are counted 1, 2, 3 and upwards. The first player to **seven points, with a two-point lead**, wins the tie-break, and with it the set, by seven games to six.

If the tie-break itself reaches 6-6, it continues until someone leads by two - so a tie-break can end 7-5, or 10-8, or higher. Within the tie-break, service alternates in a set pattern and the players swap ends every six points, to keep conditions such as sun and wind fair.

A historical note: deciding sets once ran on without a tie-break at some tournaments, occasionally producing marathon matches. The Grand Slams have since standardised a final-set tie-break, so even the longest contests now have a defined finish.

## Level three: sets into a match

The top of the ladder is the **match**, won by taking a majority of sets. Two formats dominate:

- **Best of three sets:** the first player to win two sets wins the match. This covers most professional and recreational tennis, including the women's draw at the Grand Slams.
- **Best of five sets:** the first to three sets wins, used for the men's singles at the four Grand Slam tournaments. It is the reason men's Slam matches can last several hours.

So a women's Slam match might finish 6-4, 7-5, while a men's Slam match could run to five sets and a deciding tie-break. The longer format rewards stamina as much as skill - one reason fitness and recovery matter so much, and why even amateurs benefit from sensible habits like those covered in [how to prevent running injuries](/sports/how-to-prevent-running-injuries) and warming up with [proper stretching](/health/how-to-stretch-properly) before a hard session on court.

## Serving, sides and a few practical points

A handful of extra rules round out the picture without changing the scoring itself:

- **One player serves an entire game**, then service passes to the opponent for the next game. So serve alternates game by game.
- **Players change ends** after the first game and then after every two games (and during a tie-break), to share out any advantage from sun, wind or court surface.
- **The server's score is called first**, which is why "thirty-love" and "love-thirty" describe opposite situations depending on who is serving.

Hold onto these and you can follow any singles match from the umpire's calls alone. Doubles uses the same scoring, with serving rotating among the four players.

## Why the system endures

It would be easy to "fix" tennis scoring with plain numbers, but the quirks do real work. The "win by two" rule at points, games and tie-breaks manufactures jeopardy: a player can be a single point from defeat and still claw back, because the rules deny easy, narrow wins. The result is a sport full of momentum swings, where a match is rarely over until the final point is won. That blend of clear structure and built-in drama is what makes other rule systems fascinating to unpick too, from the offside law to the way [Formula 1 points and standings work](/sports/how-f1-points-work).

## The bottom line

Tennis scoring is a ladder with four rungs: **points** build a **game**, games build a **set**, and sets decide the **match**. Within a game the points are called 15, 30, 40 and game, with zero known as love, and you must win by two from deuce. A set goes to six games (win by two), with a tie-break to settle 6-6, and a match is best of three sets - or best of five for the men at the Grand Slams. The vocabulary is eccentric and the margins are deliberately tight, but that is the point: it is precisely this structure that keeps even a one-sided-looking match alive until the very last ball.

## Frequently asked questions

### Why does tennis count 15, 30, 40 instead of 1, 2, 3?

No one knows for certain, but the most popular explanation links the numbers to a clock face, with points marked at 15, 30 and 45 minutes. The 45 is thought to have been shortened to 40 over time so that deuce and advantage could sit neatly before the hour. It is a historical quirk rather than a logical system, and you simply learn the sequence.

### What does love mean in tennis?

Love is tennis's word for zero. A game at 30-0 is called 'thirty-love', and a game where you have not yet won a point is 'love'. One common theory is that it comes from the French l'oeuf, meaning egg, because a zero looks like an egg, much like a 'duck' in cricket. Whatever its origin, love always means no points.

### What is deuce and how do you win from it?

Deuce is the score when both players reach 40-40. From deuce you cannot win the game with a single point; you must win two points in a row. Winning the first gives you 'advantage'; winning the next takes the game. If you win the advantage point but then lose the next, the score returns to deuce, and this can repeat many times.

### What is a tie-break for?

A tie-break settles a set that has reached six games all, avoiding endlessly long sets. Players score in plain numbers (1, 2, 3 and so on), and the first to seven points, with a two-point lead, wins the tie-break and the set seven games to six. Service alternates in a fixed pattern, and players change ends every six points.

## Sources

- [International Tennis Federation (ITF)](https://www.itftennis.com/)
- [The Championships, Wimbledon](https://www.wimbledon.com/)
- [Encyclopaedia Britannica](https://www.britannica.com/)

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