Tennis scoring can look strange to newcomers — why does a player's first point count as "15" instead of "1"? This guide breaks down the full structure of tennis scoring, from a single point all the way up to a completed match, so you can follow any match with confidence.
The Building Block: Points
Every tennis match is built from individual points. A point begins with a serve and ends when the ball goes out of play, is hit into the net, bounces twice on one side, or is struck illegally (such as being touched twice by the same player). The player who wins the rally wins the point.
What makes tennis distinctive is how points are labeled within a game. Instead of counting 1, 2, 3, 4, the server and returner progress through a traditional sequence:
- Love — zero points
- 15 — one point
- 30 — two points
- 40 — three points
- Game — four points (provided the player is ahead by at least two points)
The origin of this numbering is debated among historians, but the terminology has stuck for centuries and remains standard under the rules published by the International Tennis Federation (ITF), the sport's global governing body. When announcing the score, the server's point total is always stated first, followed by the returner's.
Deuce and Advantage
If both players reach 40 (three points each), the game does not end immediately — a player must win by a margin of two points. This situation is called "deuce." From deuce, the next point won is called "advantage" for whichever player wins it. If the player with the advantage wins the following point as well, they win the game. If they lose it instead, the score returns to deuce, and the sequence repeats until one player pulls ahead by two consecutive points.
Some events use a shortened format called "no-ad" scoring, where the first player to win a point at 40-40 simply wins the game outright, skipping the deuce-advantage cycle entirely. This format is sometimes used in doubles or in certain tournament structures to keep match lengths more predictable, though traditional ad scoring remains the standard in most professional singles play.
From Games to Sets
Winning points builds toward winning games, and winning games builds toward winning a set. In standard scoring, a player must win at least six games to take a set, and they must also win by a margin of at least two games. For example, a score of 6-4 is a completed set, but 6-5 is not — play must continue until one player reaches at least six games with a two-game cushion, or the set moves into a tiebreak.
If the game score reaches 6-6, most modern formats call for a tiebreak game to decide the set, rather than continuing indefinitely. (The specific mechanics of tiebreaks are detailed in a separate article, since they have their own distinct scoring pattern.) Historically, some tournaments required players to keep playing games until someone achieved a two-game lead with no tiebreak safety valve, and a small number of elite events preserved versions of this approach for final sets, though that has become increasingly rare as tiebreak formats have been adopted more broadly.
From Sets to a Match
A full match is decided by winning a set number of sets. The two common formats are:
- Best-of-three sets — the first player to win two sets wins the match. This is standard for most women's professional matches and for the majority of men's tour-level events outside the four Grand Slam tournaments.
- Best-of-five sets — the first player to win three sets wins the match. This longer format is traditionally used for men's singles at the Grand Slam tournaments, testing endurance and consistency over a longer contest.
Because sets themselves require a two-game margin (and matches require the stipulated number of sets), matches can vary enormously in length, which is part of what makes tennis mentally and physically demanding compared to sports with fixed playing clocks.
Breaking Serve
Serve rotates after every game, with players alternating who serves each new game throughout a set. Because the server traditionally holds a built-in advantage — they control the toss, the placement, and the pace of the first shot — winning a game when your opponent is serving is considered a notable achievement. This is referred to as a "break of serve," or simply a "break." A player who wins a set without ever losing their own service game, while also managing to break their opponent's serve at least once, has won the set comfortably from a positional standpoint, even if the final game score was close.
Commentators and scoreboards often track service breaks separately because they reveal the underlying rhythm of a match — a set that finishes 6-4 with two breaks each tells a very different story than a 6-4 set with only one break total.
Reading a Scoreboard
A typical scoreboard displays completed and current sets side by side, usually with the server's games listed on top or marked with an indicator such as a small dot or asterisk next to their name. Within the set currently being played, the game score is shown in standard point terms (love, 15, 30, 40) until the game concludes, at which point the display updates to reflect the new game count within that set. Past sets remain visible as simple game totals, such as "6-4," so spectators can track the full arc of the match at a glance.
Quick Recap
- Points progress through love, 15, 30, 40, and game, with a two-point margin required after deuce.
- Deuce and advantage scoring keeps games close games fair by requiring a clear two-point edge.
- A set generally requires six games won by a two-game margin, or a tiebreak at 6-6.
- Matches are played as best-of-three or best-of-five sets, depending on the event.
- Serve alternates each game, and winning a game on your opponent's serve is called a "break."
- Scoreboards track both the live game score and the running tally of completed sets.