How the Tennis Points System Works

The tennis points system builds in three stages: points win games, games win sets, and sets win the match. In a standard game, the score moves from love to 15, 30 and 40, then game—unless both players reach 40, when play continues through deuce and advantage.

Those numbers are score labels, not point values. Winning the first point gives you a score of “15”; it does not award 15 separate points.

How points are scored in a game

The server’s score is called first. So 30–15 means the server has won two points and the receiver one, regardless of who leads the set. The ITF’s 2026 Rules of Tennis, Rule 5 define the sequence:

Points won by a player or team	Score in a standard game
0	Love
1	15
2	30
3, before deuce	40
At least 4, with a two-point lead	Game
Both have won at least three points and are level	Deuce
One point ahead after deuce	Advantage

A player can win a game in four points: love–15–30–40–game from their own perspective. But four points are not always enough. At 40–30, the leader wins the game with the next point; if the opponent wins it, the score becomes deuce.

From deuce:

• Win the next point: you have advantage.
• Win the following point too: you win the game.
• Lose the following point: the score returns to deuce.

There is no fixed maximum number of points in a standard advantage game. Players can keep returning to deuce until someone wins two consecutive points from there. “Ad-in” means the server has advantage; “ad-out” means the receiver does, as explained in the USTA’s scoring guide.

Each completed point advances the score once. A double fault costs the server one point—not two. It ends the game only if that point gives the receiver the game-winning score. See what counts as a double fault.

How games become sets and matches

In a standard tiebreak set, the first player to six games wins if they lead by at least two games. That produces scores such as 6–0, 6–3 or 6–4.

At 5–5, a player can win the next two games to take the set 7–5. At 6–6, a tiebreak decides the set, which finishes 7–6. An advantage set is different: there is no tiebreak at 6–6, and play continues until someone leads by two games. These are separate formats under ITF Rules 6 and 7.

Match formats count sets:

• Best of three: first to two sets wins, either 2–0 or 2–1.
• Best of five: first to three sets wins, either 3–0, 3–1 or 3–2.

For example, 6–4, 3–6, 7–5 is a two-sets-to-one victory for the player whose score is listed first. Points reset after each game, and the game count resets for the next set; neither carries over as a cumulative match score.

Tiebreaks use ordinary numbers

A standard tiebreak counts 0, 1, 2, 3…, rather than 15–30–40. The first player to seven points, with a two-point lead, wins. At 6–6 in points, seven is no longer enough: possible finishes include 8–6, 9–7 and beyond.

Serving changes within the tiebreak. The player due to serve starts with one point; the opponent serves the next two, then they alternate two-point serving turns. Under the standard rule, players change ends every six points. The player who served first in the tiebreak receives in the opening game of the next set. These procedures are set out in ITF Rules 5 and 10.

Two variations are worth distinguishing:

• Grand Slam singles deciding-set tiebreak: at 6–6 in the final set, the target is 10 points, still with a two-point lead. The 2026 US Open guide confirms the shared final-set format across the four majors.
• Match tiebreak: replaces the entire deciding set, rather than beginning after six games each. A 10-point version requires a two-point lead, under ITF Appendix VI.

No-ad scoring changes deuce

In no-ad scoring, 40–40 leads to one deciding point. Whoever wins it wins the game; there is no advantage-and-back-to-deuce cycle. This is an approved alternative under ITF Appendix VI. Doubles formats can combine no-ad games with a match tiebreak, so check the event’s format rather than assuming singles rules. Our mixed doubles guide explains those combinations.

Why total points do not decide the winner

Tennis rewards winning the required games and sets—not the largest aggregate point total.

Consider two hypothetical standard games: you win the first 4–0 in points, then lose the second 4–6 in points. You have won eight points to your opponent’s six, but the game score is 1–1. Your surplus in the first game cannot rescue the second.

That distinction also explains pressure-point statistics. A break point is a point on which the receiver can win the server’s game. It still counts as one point, but it can end that game immediately. Break-point conversion describes how often those opportunities were taken; by itself, it is not proof of mental strength. Read the point total alongside the game score, the opportunities and the match format.