Tennis scoring is the single biggest barrier for new players, and it has almost nothing to do with the tennis. The sequence goes 15, 30, 40, game — not 1, 2, 3, 4 — and the word for zero is "love." Once you have seen the structure once, it stops being confusing. This guide walks through it in the order a real match unfolds.
The three levels of a tennis score
Every tennis match is three nested contests, and confusion almost always comes from mixing up which level you are talking about.
- Points build a game.
- Games build a set.
- Sets build the match.
You win by taking enough points to win games, enough games to win sets, and enough sets to win the match. Crucially, points do not carry over — winning a game 40–0 counts exactly the same as winning it after twenty minutes of deuce.
Scoring points within a game
Inside a single game, the four point values are:
- 0 points = "love"
- 1 point = "15"
- 2 points = "30"
- 3 points = "40"
- 4 points = game, provided you are at least two points ahead
So a game that goes to the server without reply is called "fifteen–love, thirty–love, forty–love, game." The server's score is always said first, regardless of who is winning.
The most common explanation for the odd numbers is that early scoring was tracked on a clock face — quarter, half, three-quarters — with 45 later shortened to 40 in speech. It is a historical quirk rather than anything you need to reason about.
Deuce and advantage
Here is the part that trips people up. If both players reach 40 — three points each — the score is not "forty–forty." It is called deuce.
From deuce, you must win two points in a row to take the game:
- Win one point from deuce and you have the advantage (often called "ad in" if the server has it, "ad out" if the receiver does).
- Win the next point too, and you win the game.
- Lose it instead, and the score returns to deuce.
A game can bounce between deuce and advantage indefinitely. This is why the "win by two" idea matters more than the number four — the four-point target is only the minimum.
Winning a set
To win a set you need six games, and you must win by two. So 6–4 and 6–3 are complete sets. 6–5 is not — you play on.
If the set reaches 6–5, the leader can serve it out for 7–5. If the trailing player levels it at 6–6, almost every format goes to a tiebreak.
How a tiebreak works
The tiebreak is the one place where tennis uses ordinary numbers. At 6–6:
- Points are counted 1, 2, 3 and upward — no love, no 15/30/40.
- First to 7 points wins, and again you must win by two. At 6–6 in the tiebreak, play continues to 8–6, 9–7, and so on.
- The first server serves one point. After that, service alternates every two points.
- Players change ends every six points.
Whoever wins the tiebreak takes the set 7–6.
Winning the match
Most recreational and professional women's matches are best of three sets — first to two sets wins. Men's Grand Slam singles is best of five, so first to three.
Many club and social formats replace a full deciding set with a match tiebreak (first to 10 points, win by two) to keep matches inside a court booking. If you play in a league, check which one applies before you start — it changes how you manage the end of a match.
Calling the score correctly
A few conventions that make you look like you have played before:
- The server's score comes first, always. "Thirty–fifteen" means the server has 30.
- The server calls the score out loud before each point. This is not just etiquette — it is the main mechanism for catching disagreements before they become arguments.
- When both players have the same score below 40, say "fifteen-all" or "thirty-all," not "fifteen–fifteen."
- A game won without conceding a point is a "love game." A set won 6–0 is a "bagel."
Shortened formats you will run into
No-ad scoring: at deuce, a single deciding point settles the game, with the receiver choosing the service side. Common in college and league play because it caps match length.
Pro sets: a single set to 8 or 10 games, win by two.
Fast4: sets to four games, no-ad, tiebreak at 3–3.
Common scoring mistakes
- Forgetting who served. Service alternates every game. Losing track mid-set is the most common source of disputes.
- Forgetting to change ends. You change ends after the first game, then after every two games — so after games 1, 3, 5, and so on.
- Assuming 40–40 is game point. It is deuce; you still need two consecutive points.
- Calling the score only when you remember. Call it every point and disagreements resolve themselves.
Keeping score without holding it all in your head
Once you understand the system, the practical problem is just memory — especially in a long set where you are also trying to play well. Calling the score aloud every point does most of the work. If you want the match kept for you, a scoring app handles the game boundaries, deuce, and tiebreak logic automatically, and leaves you with a record afterwards instead of a scoreline you half-remember.