Tennis Scoring Explained for Beginners: Why the Game Will Not End

Three Boxes Inside Each Other

Before any number matters, get the shape. A tennis match is composed of points, games and sets, with a set consisting of a number of games which in turn each consist of points. Three containers nested inside each other, and every piece of confusion later comes from mixing up which one you are looking at.

Think of three counters running at once. The smallest tracks the current game and resets constantly. The middle one tracks games won in the current set and only moves when the small one fills up. The big one tracks sets. A player can lose the small counter all afternoon and still win the match, which is why the sport looks unfair to someone counting rallies. Everything below is the filling rule for one of the three.

A Point Is Worth One Point, Whatever It Is Called

Here is the thing nobody says out loud early enough: the odd numbers are names, not values. A game is won by the first side to win at least four points and have a margin of two points or more over their opponent. Four points, counted normally, is the real rule. Score calling in tennis is unusual in that, except in tiebreaks, each point has a corresponding call that is different from its point value. Your first point is announced as 15, your second as 30, your third as 40, and your fourth normally ends the game. Zero is announced as love. So the ladder on the scoreboard is love, 15, 30, 40, and the count underneath it is zero, one, two, three.

Translate once and the panic drops. If the board shows 30 to 15, one player has won two points and the other has won one. Some governing texts let you skip the translation entirely: the USTA rule book, though not the ITF rules, carries a comment that zero, one, two and three may be substituted for love, 15, 30 and 40, particularly appropriate for matches with an inexperienced player.

Two conventions decide how you read the call. Normally the server's score is always called first and the receiver's score second, so 40 to 15 does not tell you who is ahead until you know who is serving. And the current point score is announced orally before each point by the umpire, or by the server if there is no umpire. Ties get shorthand: the score is described as 15 all when both sides have won one point, and as 30 all when they have both won two. The one tie that breaks the pattern is the third, and it is where the sport gets its reputation.

Why 40 to 40 Is Called Deuce

If each player has won three points, the score is called as deuce instead of 40 all. From that point on in the game, whenever the score is tied, it is described as deuce regardless of how many points have been played. That second sentence explains every long game you have ever watched.

Deuce is not a score, it is a state. The game leaves the ladder and enters a loop, so a game returning to level at the eighteenth point is still deuce, announced exactly like the first one. There is no 50 and no running total on display.

The loop exists because winning a game requires at least four points and a two point margin. Three points each satisfies neither, so the game cannot end there. That is the idea that makes tennis scoring click: the sport never lets you win a game by one point after a tie.

Advantage, and the Loop That Sends You Back

This type of tennis scoring is known as advantage scoring, and the requirement is that in a game in which the players have scored three points each, one player must get two points ahead in order to win. The side that wins the next point after deuce is said to have the advantage. That is one point of separation, and only two things can happen next.

The player with advantage wins the next point. That is the second point of the required margin, and the game is over.

The player with advantage loses the next point. The score is again deuce, since the score is tied, the separation is erased and the loop restarts.

That reset is the whole answer to why the game seems endless. Advantage is not progress you keep, it is a lead of exactly one point that either doubles into a win or vanishes. You stop waiting for a number to climb and start watching for two consecutive points.

There is a shortcut version, so if you have seen deuce end immediately you were not imagining it. A popular alternative to advantage scoring, used nowadays at exhibition matches as well as professional tournaments in doubles, is no advantage or no ad scoring, created by James Van Alen in order to shorten match playing time. The first player to reach four points wins the game in all circumstances, eliminating the requirement to win by two after a tie. Formats vary by event and level, so ask before the first game.

Six Games Wins a Set, Except When It Does Not

Move up one container. A set is won by the first side to win six games, with a margin of at least two games over the other side, giving scores such as 6 to 4 or 7 to 5. The margin rule repeats one level up, so nobody wins a set 6 to 5.

Unlike games, set scores are counted in the ordinary manner, 1, 2, 3 and so on, except that the state of having won zero games is called love. So a set at 3 to 0 is announced as three love, while the game count never turns into 15 or 30. The score is called at the end of each game with the leading player's score first, or as a number all when level.

The alternation of service between games continues throughout the match without regard to sets, but the ends are changed after each odd game within a set, which is why players cross at what looks like an arbitrary moment. Which leaves the obvious hole: if neither side can pull two games clear, the set has the same problem the game had at deuce.

The Tiebreak: How a Stuck Set Gets Closed

If the set is tied at six games each, a tiebreak is usually played to decide the set. At a game score of 6 to 6, the set is often determined by one more game called a tiebreaker, so the completed set reads 7 to 6 or 6 to 7. Inside that game the naming ladder disappears: most tiebreaks require a player to get seven points and have two more points than their opponent, which is why they are referred to as a seven point tiebreak, and the calls are simply the number of points won by each player. You hear four to three, not 40 to 30.

The margin rule survives even here. If the point score is 6 to 5 and the player with six points wins the next point, they win both the tiebreak and the set, seven games to six. If the player with five wins instead, for 6 to 6, the tiebreak continues and cannot be won on the next point. Longer versions exist: some tiebreaks, called a super tiebreak or ten point tiebreak, require ten points with the same two point margin. The player who would normally be serving after 6 to 6 serves first, and the tiebreak counts as a service game for that player.

One last piece of scoreboard grammar. Another way of listing a tiebreak is to show only the loser's points, so 7 to 6 with a 3 in brackets means the tiebreak was seven to three.

Sets Into a Match

Top container, simplest rule. The winner is the side that wins more than half of the sets, and the match ends as soon as this is achieved. That last clause explains something people find strange on television: a match does not play out a fixed number of sets, so a best of three can end in two.

Formats differ by category. Men's matches may be the best of either three or five sets, while women's and mixed doubles matches are usually best of three, and the best of five format is usually only used in the men's singles matches at Grand Slam tournaments. Mixed doubles mostly uses a match tiebreak which replaces the third set, and the pair that reaches ten points with a margin of two or more wins the match.

Final set rules have moved around and are worth checking rather than assuming. In 2022 the French Open adopted a final set tiebreaker at 6 to 6 and Wimbledon also adopted a tiebreak at 6 to 6, which meant that from 2022 all final sets in Grand Slam tournaments would be decided by a fifth set tiebreak at 6 to 6. The safe habit anywhere: ask for the format before the first serve.

Where Love Came From, and Why Nobody Can Prove It

This is the part where most articles pick the prettiest story and state it as fact. The accurate version is that nobody knows. A French text from 1435 refers to quarante cinq, meaning forty five, which gave rise to modern 40. The first recorded theories about the origin of 15 were published in 1555 and 1579. However, the origins of this convention remain obscure. That is the source's own verdict.

The clock face story is the most repeated. Some believe that clock faces were used to keep score on court, with a quarter move of the minute hand to indicate a score of 15, 30 and 45, and when the hand moved to 60 the game was over. In that telling, deuce was introduced so the game could not be won by a one point difference, and the 45 became 40 to keep the score within the 60 ticks. It is presented as a belief, not as documented fact.

Love has even more candidates. One explanation is that it derives from the French expression for the egg, l'oeuf, because an egg looks like the number zero. Another comes from the Dutch expression iets voor lof doen, which means to do something for praise. Another comes from the notion that at the start of any match, when scores are at zero, players still have love for each other. Competing explanations and no decisive evidence is the state of knowledge, so tell the stories as stories.

Counting Your Own Match Without an Umpire

Casual matches have no chair and no scoreboard, so the score lives in two people's memory and drifts. Four habits keep it intact.

Say it before every point, out loud. The convention already puts this job on you: the score is announced before each point by the server when there is no umpire. Keep the server's score first.

Use plain numbers while you are learning. Zero, one, two, three is explicitly allowed as a substitute in at least one national rule book.

Announce games at the changeover. Games decide the set, and the ends change after each odd game, which gives you a built in checkpoint.

Settle the format before the first serve. Advantage or no ad, tiebreak at 6 to 6 or not, best of how many.

The same logic travels: racket sports with the same nested containers borrow it directly. If you also film those sessions, our walkthroughs on recording a beach tennis match and recording a padel match cover the practical side of the court rather than the scoreboard.