A tennis set can be over in six games—or stretch much longer than you might expect. The usual rule is simple: a player must win at least six games and lead by two. What happens when the score reaches 6–6 depends on the competition’s tiebreak rules.
The short answer
In most professional matches, a set takes at least six games and, if it reaches a tiebreak at 6–6, no more than 13 games. A player might win 6–0, 6–3 or 7–5. If the score gets to 6–6, a tiebreak decides the set, which is recorded as 7–6.
That 13-game maximum applies to a set with a tiebreak at 6–6. In an advantage set, players keep going until someone leads by two games, so there is no fixed maximum.
How a set is won
A tennis match is divided into sets, and each set is made up of games. To win a standard set, a player needs six games and a two-game lead. That means a score of 6–4 ends the set, but 6–5 does not: the players must play another game.
If the player who is behind wins that next game, the score becomes 6–6. In most modern formats, a tiebreak is then played. If the player who is ahead wins it instead, the set ends 7–5.
| Set score | What it means | Games played |
|---|---|---|
| 6–0 | Set ends as soon as one player wins six games | 6 |
| 6–4 | Six games to four gives a two-game lead | 10 |
| 7–5 | The set went to 5–5 before one player won two straight games | 12 |
| 7–6 | The players reached 6–6 and a tiebreak decided the set | 13 |
What happens at 6–6?
Under the common tiebreak format, the players play a tiebreak when the set reaches 6–6. The standard tiebreak is usually won by the first player to reach seven points with a lead of at least two. So a tiebreak could end 7–4, 8–6 or 12–10.
Those are tiebreak points, not extra games. The tiebreak counts as the final game of the set, and the score is written as 7–6. A scorecard may show the tiebreak result in parentheses, such as 7–6 (7–4), to make the points clear.
For example, if the set is 6–6 and a player wins the tiebreak 7–5, that player wins the set 7–6. The set still contains 13 games, even though the tiebreak itself involved more than seven points.
Why some sets have more than 13 games
Not every format uses a tiebreak at 6–6. In an advantage set, play continues until one player leads by two games. A set can therefore end 8–6, 10–8 or at an even longer score.
Advantage sets were once common in major tennis, particularly in the final set of matches. Long battles such as John Isner and Nicolas Mahut’s Wimbledon match in 2010 showed how far they could go: their final set ended 70–68. Rules have since changed at the Grand Slams, but advantage sets can still appear in certain competitions or formats. Always check the rules for the event you’re watching.
There is another format to recognize: some doubles matches use a match tiebreak instead of a full deciding set. It is generally played to 10 points, with a two-point lead required. That tiebreak replaces the set; it does not mean the match has a 10-game set.
Does the number of sets in a match change this?
No. Whether a match is best of three sets or best of five, the rules for winning an individual set are usually the same. The difference is how many sets a player needs to win the match. Most women’s singles matches and many men’s matches are best of three; men’s singles at Grand Slam tournaments are best of five.
A match can therefore have very different game totals even when the set format is the same. A quick 6–1, 6–2 match contains 15 games. A three-set match with scores of 7–6, 6–7, 7–6 contains 39. Long games, close sets and tiebreaks all add to the time and drama, but a tiebreak’s points don’t add separate games to the set score.
Games, points and sets: keeping the terms straight
It’s easy to mix up the parts of a tennis score. A point is the smallest unit. Points make up a game, and games make up a set. In a standard game, the scoring moves from love (zero) to 15, 30 and 40; a player generally needs to win four points and lead by two to take the game.
So when you see 6–4, that score is counting games, not points. The first number tells you how many games one player won in that set. It doesn’t tell you how many points were played in those games or how long the set lasted.
Frequently Asked Questions
Can a tennis set end 6–5?
No. At 6–5, the player in front still needs one more game to win by two. The set ends 7–5 if that player wins the next game, or reaches 6–6 if the other player wins it.
Is 7–6 the longest a set can be?
In the usual format with a tiebreak at 6–6, yes: the set is recorded as 7–6 and contains 13 games. An advantage set can go beyond 13 games because players must establish a two-game lead without a tiebreak cap.
Does a tiebreak count as a game?
Yes. The tiebreak decides the final game of a set that has reached 6–6. Its points are shown separately when needed, but the set score becomes 7–6.
How many games are in a set of doubles?
Doubles uses the same basic set-scoring rule when a full set is played: six games and a two-game lead, with a tiebreak commonly used at 6–6. Some matches replace the deciding set with a match tiebreak, so the format can vary by competition.
Final Thoughts
For most matches, expect a tennis set to last between six and 13 games: six is the minimum, and a tiebreak at 6–6 produces a 7–6 finish. The key rule is that a player needs six games and a two-game lead, unless a tiebreak format steps in at 6–6. If a set goes past 13 games, it’s being played under a format without that standard tiebreak limit.
