Tennis Scoring Explained: Sets, Games, Tiebreaks and Grand Slams

Tennis scoring is famous for sounding like a private language. Fifteen, thirty, forty, deuce, advantage — a commentator can call out a whole game without once mentioning a number that behaves the way numbers normally do. Yet underneath the old-fashioned vocabulary sits a neat, logical system: points build games, games build sets, and sets build the match. Learn that ladder and you can follow any match on any court in the world, from a local club final to a Grand Slam championship point. This guide climbs the ladder one rung at a time.

A point begins with a serve and ends when someone wins the rally. The scoring names for the first four points are love (zero), fifteen, thirty and forty. Win the next point at forty and, normally, you win the game. The odd jumps are a relic of the game’s history, but functionally you only need to count points won: nought, one, two, three. The server’s score is always called first, so “thirty-fifteen” means the server has won two points and the receiver one.

Things get interesting at three points each, which is called deuce. From deuce, a player must win two points in a row to take the game. Win one and you hold “advantage”; win the next and the game is yours, but lose it and you fall back to deuce. This is why some games last twenty minutes: two evenly matched players can trade advantages back and forth while break points come and go. A “break” of serve — winning a game on the opponent’s serve — is the currency of tennis, because serves are normally so reliable that games flow with them.

From games to sets: how tennis scoring builds a match

A set is won by the first player to reach six games, provided they lead by two. At six games to five, the leader can close it out by winning the next game, making it seven-five. At six games all, most tournaments now play a tiebreak: a single extended point sequence where players serve in rotation — one point, then two each — and the first to seven points, again by a margin of two, takes the tiebreak and the set, recorded as seven-six. The tiebreak exists to stop sets running forever, and it compresses an hour of tension into fifteen minutes.

Matches are played over the best of three sets in most events, and the best of five sets in men’s singles at the four Grand Slam tournaments — a difference that turns those championships into tests of endurance as much as skill, as we describe in our guide The Four Grand Slams: Dates, Surfaces and What Makes Each One Special. Women play best of three sets at every level, and doubles has its own variations, including no-ad scoring in some events, where the point after deuce simply decides the game.

Tiebreaks and the final set: tennis scoring’s newest chapter

For years the final set at Grand Slams had no tiebreak at all, producing marathons that lasted days of playing time in extreme cases. The sport eventually standardised: all four Slams now use a tiebreak at six-six in the deciding set, played to ten points instead of seven. It is a sensible compromise — long enough to feel earned, short enough to end before midnight. Elsewhere, most tour events simply use the standard seven-point tiebreak in every set.

The entire system is codified in the rules maintained by the sport’s international federation ITF, which is why the same words echo from Wimbledon to a public park. Once the ladder clicks — four points for a game (with two to spare at deuce), six games for a set (with two to spare), two or three sets for a match — the strangeness disappears. What remains is the rhythm that makes tennis scoring rather beautiful: every point matters a little, every game matters more, and the whole match can turn on one break of serve in the ninth game of the fifth set. Watch with the ladder in mind, and you will never feel locked out of the language again.

A few final quirks are worth knowing before your next match. A “let” is a replayed point, most often when a serve touches the net and lands in; a “foot fault” is called when the server steps on the baseline too early. In some doubles events you will meet the match tiebreak, a single race to ten points that replaces a deciding set entirely, and no-ad scoring, where deuce is settled by one winner-takes-all point with the receivers choosing which side to receive on. Broadcasts also show second-serve percentages and break points saved, but none of it changes the ladder underneath: points, games, sets, match. Everything else is commentary.