A tennis score can look baffling until you see its three layers: points make games, games make sets, and sets decide the match. The set is the middle layer—and it’s where a close match can turn on a single service game or a tense tiebreak.
The basic rule: win six games, by two
In a standard set, a player must win at least six games and lead by two. That means 6–0, 6–2 and 6–4 are set-winning scores, but 6–5 is not. If the score reaches 5–5, one player must win the next two games to take the set 7–5. If it reaches 6–6, the players usually play a tiebreak.
The same two-game margin explains why a set can last longer than expected. If the players keep trading games, the score might go from 6–6 to 7–7, then 8–8. That can happen under a format without a tiebreak, though most major professional events now use one to finish a set.
How points become games
Each game is made up of points. In traditional scoring, the points are called love, 15, 30 and 40. A player usually needs four points to win a game, but must be ahead by two once both players reach 40–40, or deuce.
At deuce, winning one point gives a player advantage. Win the next point and the game is theirs; lose it and the score returns to deuce. This can stretch a game well beyond four points. A player might save several game points before finally holding serve, or lose the game after having the advantage more than once.
Players take turns serving whole games. So if one player serves the first game, the other serves the second, and they continue alternating. Holding serve means winning your own service game; breaking serve means winning a game while your opponent is serving. A break can be especially valuable late in a set because it may put the returner one game from victory.
What happens at 6–6?
In a standard tiebreak, the first player to reach at least seven points with a lead of two wins it. If the score is 6–6, play continues until someone creates that two-point margin. The set score is recorded as 7–6, even if the tiebreak itself ends 10–8 or 12–10.
The serving pattern changes during the tiebreak: one player serves the first point, then the other serves two points, and the players continue taking turns serving two points. They switch ends after every six points. These details matter because serve order and court conditions can shape a close tiebreak.
In a regular set, the tiebreak winner takes the set. The player who served first in the tiebreak receives in the first game of the next set, if there is one.
How to read common set scores
| Set score | What it means |
|---|---|
| 6–0 | One player won all six games. |
| 6–4 | The winner reached six games with a two-game lead. |
| 7–5 | The set went past six games and ended with a two-game margin. |
| 7–6 | The players reached 6–6, then one won the tiebreak. |
A 6–4 score does not tell you exactly how the set unfolded. One player might have broken serve twice; or both may have traded breaks before the winner held serve late. Watching the game-by-game score—or the match itself—reveals how the set was won.
Deciding sets and different formats
The rules for ending a set can vary by competition and match format. Many sets use a tiebreak at 6–6. In the deciding set, some events use a longer match tiebreak instead: the first player or team to reach 10 points with a two-point lead wins the match tiebreak. It counts as the deciding set for the match, but the score is recorded differently from a regular 7–6 set.
At the four Grand Slam tournaments, singles matches use best-of-five sets for men and best-of-three for women. Since 2022, all four have used a 10-point tiebreak at 6–6 in the deciding set. Other professional events often play best-of-three matches, and doubles competitions commonly use a match tiebreak instead of a full third set. Always check the event’s format if a match-ending score looks unfamiliar.
| Format | How the set or match ends |
|---|---|
| Regular tiebreak set | At 6–6, play a tiebreak to at least 7 points, win by two. |
| Grand Slam singles deciding set | At 6–6, play a tiebreak to at least 10 points, win by two. |
| Some doubles formats | A match tiebreak may replace the third set. |
Not every competition has always used the same rules. Wimbledon’s 2010 match between John Isner and Nicolas Mahut famously reached 70–68 in the fifth set, before the tournament introduced a final-set tiebreak. That score is an unusual piece of tennis history, not the usual way a modern set ends.
How many sets win a match?
Most professional matches are best of three sets: the first player to win two sets takes the match. Men’s singles at Grand Slam tournaments are best of five, so the winner must take three sets. The number of sets needed to win the match is separate from the rules for winning each individual set.
For example, a best-of-three match might finish 6–4, 3–6, 6–2. Each player won one set, and the winner took the third. A score such as 6–4, 7–6 means the same player won both sets, with the second decided by a tiebreak.
Why sets matter tactically
A set creates its own rhythm. Early on, players may test each other’s serve and return; as the score tightens, a single break can become decisive. At 5–4, the player serving for the set has a chance to close it out, while the opponent has to break serve just to stay alive.
Tiebreaks put extra pressure on each point because there are fewer chances to recover from a mistake. Players often focus on a reliable first serve, a deep return and keeping errors down. Still, the best choice depends on the opponent and the situation: a bold attack can win a point quickly, while a patient rally may force a mistake.
Frequently Asked Questions
Can you win a set 6–5?
No. In a standard set, a player needs a two-game lead. At 6–5, the next game must be played; the set could end 7–5 or continue to 6–6.
Does a tiebreak count as a game?
Yes. The tiebreak decides the 6–6 set, which is recorded as 7–6. The points in the tiebreak are not shown as ordinary games in the set score.
How many games are in a tennis set?
It depends on how closely matched the players are. A 6–0 set has six games; a 7–6 set has 13. Without a tiebreak, a set can go beyond that if players keep leveling the score.
Are all tennis sets played the same way?
No. The usual format requires six games and a two-game lead, with a tiebreak at 6–6, but deciding sets and doubles formats can use different tiebreak rules. The event’s regulations determine the exact format.
Final Thoughts
Think of a tennis set as a race to six games, with a two-game cushion required to finish. If the players are still level at 6–6, a tiebreak usually settles it. Once you know that structure—and remember that a match may need two or three sets to win—the scoreboard becomes much easier to follow.
