Tennis scoring works on four levels: points build a game (love, 15, 30, 40, game), games build a set, and sets decide the match. The odd-sounding numbers and terms like love, deuce, and advantage make tennis feel complicated, but the system is logical once you see how the pieces stack. Here is the whole structure, from the first point to match point.
Points inside a game
A single game is scored with an unusual sequence. Zero is called “love.” The first point won makes the score 15, the second 30, the third 40, and the fourth point wins the game, provided the player is ahead by at least two points. The server’s score is always announced first, so “30-15” means the server has two points to the receiver’s one.
| Points won | Called |
|---|---|
| 0 | Love |
| 1 | 15 |
| 2 | 30 |
| 3 | 40 |
| 4 (with a 2-point lead) | Game |
Deuce and advantage
If both players reach 40, the score is deuce, not 40-40 in the usual sense. From deuce, a player cannot win the game with a single point; they must win two in a row. Winning the first point from deuce gives that player the advantage. If the same player wins the next point, they take the game. If they lose it, the score goes back to deuce, and the tug-of-war continues until someone strings two points together. This is why a single game can stretch on far longer than four points, occasionally running through many deuces before it is settled.
When the server holds the advantage, some players and umpires call it “ad in”; when the receiver has it, it is “ad out.” The requirement to win by two points is what gives tennis games their tension, because a player can be one point from the game and still lose it. The point that would give the receiver the game, or break the server, is a break point, and it is one of the most pressure-filled moments in the sport.
Games inside a set
Games add up to a set. The first player to win six games wins the set, but only if they are ahead by at least two games. So 6-4 and 6-3 win the set outright, while 6-5 does not; the leader must reach 7-5, or the trailing player can level it at 6-6. Players alternate serving from one game to the next throughout the set, so holding your own serve and breaking your opponent’s is the basic rhythm of a set. Break your opponent once and hold the rest of your service games, and you win the set.
The tiebreak at 6-6
When a set reaches 6-6, most competitions settle it with a tiebreak. In a standard tiebreak, points are counted plainly, 1, 2, 3, and so on, rather than in the love-15-30-40 sequence, and the first player to 7 points wins, again by a margin of two. If it reaches 6-6 in the tiebreak, play continues until one player leads by two, which is why a tiebreak score can climb to 8-6, 10-8, or higher. The set is then recorded as 7-6. Players switch serve during the tiebreak and change ends every six points to keep conditions fair.
Deciding the final set
How the very last set is settled has varied by tournament, which historically caused confusion. In 2022 the four Grand Slams jointly adopted a single standard: a 10-point tiebreak, won by two, played when the final set reaches 6-6. So a marathon final set no longer runs indefinitely at the majors. Rules for match length still differ elsewhere, which is why it helps to know the format of the event you are watching, including what makes a Grand Slam distinct.
Sets inside a match
Finally, sets decide the match. The vast majority of professional matches are best-of-three sets, meaning the first player to win two sets wins. Men’s singles at the four Grand Slam tournaments is best-of-five, so a player must win three sets, which is why major finals can last several hours. Women’s Grand Slam singles is best-of-three. Add it all up and a full match is a series of small battles nested inside one another: win enough points to take a game, enough games to take a set, and enough sets to win the whole thing.
Once you can read a scoreline like “6-4, 3-6, 7-6,” the system stops feeling strange. It says the first player won the opening set six games to four, lost the second, and edged the third in a tiebreak. Every quirky term, from love to deuce to the tiebreak, is just a piece of that layered structure.
Frequently asked questions
Why is zero called "love" in tennis?
The origin is debated, but the most cited explanation is that “love” comes from the French word for egg, l’oeuf, whose shape resembles a zero. Whatever the source, in tennis “love” simply means a score of zero.
What does deuce mean?
Deuce is the term for a 40-40 score. From deuce, a player must win two consecutive points to take the game: the first point gives them advantage, and the second wins the game. Lose the point at advantage and the score returns to deuce.
How many points are in a tiebreak?
A standard tiebreak is first to 7 points, and you must win by two. Points are counted straight up (1, 2, 3) rather than 15/30/40. Grand Slams use a longer 10-point tiebreak to decide a final set at 6-6.
How many sets are in a tennis match?
Most matches are best-of-three sets. Men’s singles at the four Grand Slam tournaments is best-of-five. The first player to win the majority of sets wins the match.
