← Developer blog

How do tennis scores work? Points, games and sets

Tennis scores build from points to games to sets. In our January to October 2026 sample, best-of-three matches had a median of 19 games.

· By the Live Tennis API team

Tennis scores build from points into games, then sets, and you win the match by winning the required sets. A regular game uses love, 15, 30 and 40, followed by game or deuce and advantage. In matches we recorded from January to October 2026, the median best-of-three match contained 19 games.

How do points work in tennis?

Love means zero. Your first point takes you to 15, your next to 30, and your next to 40.

Those labels describe progress within the current game. They aren't amounts you add to a match total.

In a standard advantage game, you need at least four points and a margin of two to win. Once the game ends, its point score resets. The winner's game count increases, and play continues toward the set.

The server's score is called first. A scoreboard keeps each player's score beside their name, so read the labels before interpreting the numbers. The ITF scoring glossary explains these terms and the standard scoring rules.

Our final-statistics sample from January to October 2026 shows how many points sit behind a finished scoreline:

Tour Matches with point totals Median points per match
ATP 3,250 148
WTA 2,962 135
Challenger men 8,576 135
Challenger women 1,709 131

These totals include points won by both players. They come from final statistics we hold, which aren't available for every match. They don't measure the length of our recorded point-by-point tape.

What happens at deuce and advantage?

When both players reach 40, the score is deuce. The next point gives its winner advantage. Winning the following point ends the game. Losing it returns the score to deuce. That loop can repeat. A game with repeated deuces still adds the same amount to the set score when someone finally wins it.

You can read AD as advantage. Ad-in means the server has advantage, while ad-out means the receiver has it. At ad-out, the receiver has a break point, a chance to win the server's game with the next point.

Some events use no-ad scoring, where a deciding point ends the game at deuce.

Check the match format before applying the advantage rule. Our guide to the score after deuce follows that part of a game in more detail.

How many games make a set?

In a standard set, you aim to win six games with a margin of two. A 6-4 set is finished. At 6-6, a tiebreak set moves into a tiebreak, whose winner takes the set 7-6.

The set score doesn't tell you how close every game was. Repeated deuces disappear into the final game count. A narrow set can contain short service games, while a wider score can hide long games.

Across our January to October 2026 completed-match sample, the game totals looked like this:

Match format Matches Median total games Lower to upper quartile
Best-of-three 21,526 19 16 to 24
Best-of-five 201 34 29 to 43

These are games played by both players across the whole match. The quartiles describe the central part of the sample, not the shortest and longest matches. Match tiebreaks aren't counted as games here.

For a closer look at the distribution, see how many games a tennis match contains.

How many sets are in a tennis match?

Best-of-three means the first player to win two sets wins the match. Best-of-five means the first to win three. The format sets the maximum, so a match can finish before the deciding set.

In our January to October 2026 sample, 28.6% of best-of-three matches reached three sets. The remaining 71.4% finished in two. In best-of-five, 21.4% reached five sets.

This is why you should read the format alongside the set score. Winning a second set ends a best-of-three match, but a best-of-five match continues until someone wins a third.

How does a tiebreak change the score?

A standard set tiebreak counts ordinary points instead of love, 15, 30 and 40. The target is seven points with a margin of two. Reaching the target without that margin doesn't finish it.

Our January to October 2026 records show tiebreaks in 18.5% of ATP sets, across 3,700 sets. For WTA, the figure was 10.8% across 3,222 sets. These are shares of sets, not shares of matches.

Some formats use a 10-point match tiebreak to decide the match. It replaces the deciding set. A deciding-set tiebreak played within a full set is different, so check which format applies. Our tennis tiebreak rules guide explains the scoring and service order.

How do you read a score as JSON?

Take the recorded Zverev versus Alcaraz result at the Australian Open on January 30, 2026. In Zverev's row, the final score reads 4-6 6-7 7-6 7-6 5-7.

He lost the opening sets, won the next sets, then lost the decider. Alcaraz won the match. Here is that result arranged as a shortened score object, with Zverev first:

{
  "sets": [2, 3],
  "games": [[4, 6, 7, 7, 5], [6, 7, 6, 6, 7]],
  "points": [null, null]
}

Each inner games array belongs to a player. Read matching positions across the arrays to recover each set score. The sets field counts sets won. We leave points null in this illustration because the final score doesn't supply a current point state.

For live score fields and response details, use our API score reference.

How this was measured

These figures come from matches the Live Tennis API recorded, measured as of October 31, 2026. The window is January to October 2026, covering scheduled dates from January 1 through October 29, using Israel local time.

Game totals use completed matches from the final score we recorded. Match tiebreaks (10-point) are not counted as games. The samples contain 21,526 best-of-three matches and 201 best-of-five matches.

Point totals come from the per-match final statistics we hold. Not every match has them, and this sample covers ATP, WTA and Challenger. Each table row gives its own match count. Tiebreak denominators are 3,700 ATP sets and 3,222 WTA sets. These samples aren't interchangeable.

Using these numbers

Use the medians to describe recorded matches, not to predict a particular final score. When you build a scoreboard, keep points separate from completed games. Preserve the player order across score arrays. Our guide to fetching tennis scores explains how to request the current score.

If you add point history, check the coverage declared for that match. A final score doesn't establish that every point was recorded. Missing point states must stay distinguishable from love.

Frequently asked questions

What does love mean in tennis?

Love means zero points in the current game. It doesn't mean the player has lost the match or has no games. When a new game starts, the point score resets to love for both players. Their completed games and sets remain on the scoreboard.

Can a tennis game finish at 40-40?

In standard advantage scoring, 40-40 is deuce, and play continues. The next point gives advantage. The player with advantage must win the following point to take the game. If they lose it, the score returns to deuce. No-ad scoring uses a deciding point after deuce instead.

Does best-of-three mean every match lasts three sets?

No. The match ends when a player wins two sets. A deciding set is needed when the players split the opening sets. In the January to October 2026 matches we recorded, 28.6% of best-of-three matches reached three sets. That figure describes this sample, not a rule of scoring.

Built with the Live Tennis API, which serves real-time scores, players, odds and model win-probability for ATP, WTA, Challenger and ITF.

API reference SDKs on GitHub Plans from $9.99/mo