Watch five minutes of tennis without knowing the rules, and you’ll hear an umpire call out numbers that make no sense — “15-love,” “30-all,” “advantage.” Once it clicks, though, it’s one of the more elegant scoring systems in sport.
This guide walks through exactly how tennis is scored, why the numbers look the way they do, and how a single point eventually turns into a championship trophy.
What Is the Scoring System in Tennis?
Tennis scoring works in four layers, stacked on top of each other:
- Points — the smallest unit, won on every rally
- Games — won by reaching four points (with a two-point margin)
- Sets — won by reaching six games (with certain tiebreak rules)
- Matches — won by taking a majority of sets (best-of-3 or best-of-5)
You need to win a point to win a game, a game to win a set, and enough sets to win the match. It sounds simple written out like that — the confusion usually comes from the unusual way points are labeled inside a game.
Tennis Points Explained: 0, 15, 30, 40
Instead of counting 1, 2, 3, 4 like most sports, tennis uses a unique sequence for points within a game:
| Points Won | Score Called |
|---|---|
| 0 | Love |
| 1 | 15 |
| 2 | 30 |
| 3 | 40 |
| 4 (by 2+ margin) | Game |
The server’s score is always announced first. So if the server has won two points and the returner has won one, the umpire calls “30-15.” If both players are tied at zero, it’s “love-all.”
Why Are There 15/30/40 Points in Tennis?
This is one of the most-searched tennis questions, and honestly, nobody knows the exact answer with certainty — the scoring system predates written records of its origin. The most widely cited theories include:
- The clock theory: Medieval French players may have used a clock face to track scoring, moving the hand a quarter turn (15 minutes) per point — 15, 30, 45, 60. Over time, “45” was shortened to “40” for easier pronunciation.
- The sixty-based counting theory: Some historians point to a base-60 counting system, similar to how we measure time and angles, as the root of jumps like 15-30-45(40).
- The “jeu de paume” connection: Tennis descended from a French handball game, and its scoring conventions may simply have carried over unchanged for centuries.
Whatever the true origin, the terminology has stuck for hundreds of years and shows no sign of changing.
How Many Points to Win a Game in Tennis?
You need four points, and you must win by a margin of at least two. If both players reach 40 (three points each), the game doesn’t end — it enters a special phase:
- Deuce: The score is tied at 40-40, called “deuce.”
- Advantage: The next point winner is said to have “advantage.” If they win the following point too, they win the game. If they lose it, the score returns to deuce.
- This can repeat indefinitely until one player wins two points in a row from deuce.
Some recreational leagues and even parts of professional tennis (like many doubles matches and some ATP/WTA tour-level matches) use no-ad scoring, where the next point after 40-40 simply decides the game — no need for a two-point cushion. This speeds up matches but is considered a variation rather than the traditional rule.
How Games Become a Set
A player wins a set by winning six games, but again with a required margin:
- Win 6 games to your opponent’s 4 or fewer, and the set is over (e.g., 6-4, 6-2, 6-0).
- If the set reaches 5-5, someone must win it 7-5.
- If it reaches 6-6, most formats play a tiebreak to decide the set, rather than continuing indefinitely.
The Tiebreak, Briefly
In a standard tiebreak, players count points normally (1, 2, 3…) instead of love/15/30/40, and the first to reach 7 points with a 2-point lead wins the set 7-6. Grand Slam finals have experimented with different final-set tiebreak formats (including a first-to-10 “match tiebreak” at deuce in the deciding set), so rules can vary slightly by tournament.
How Many Sets to Win a Match?
This depends on the level and gender of competition:
| Competition Level | Format |
|---|---|
| WTA (women’s tour) | Best of 3 sets |
| ATP (men’s tour, most events) | Best of 3 sets |
| Men’s Grand Slams (Australian Open, French Open, Wimbledon, US Open) | Best of 5 sets |
| Most doubles and mixed events | Best of 3 sets (often with a match tiebreak instead of a full third set) |
In a best-of-3 match, the first player to win 2 sets takes the match. In a best-of-5, it takes 3 set wins. This distinction matters for our next question.
Has Anyone Won 6-0, 6-0, 6-0 in Tennis?
Yes — but it can only happen in a best-of-5-set match, and it’s exceptionally rare. Here’s why: in a best-of-3 match, winning the first two sets 6-0 already ends the match 2-0, so a third set is never played. A “triple bagel” (tennis slang for three 6-0 sets, since a zero resembles a bagel) requires a format where a third set is still needed to close things out or complete the match.
Notable examples from the sport’s history include Stefan Edberg’s 6-0, 6-0, 6-0 win over fellow Swede Stefan Eriksson at Wimbledon in 1987, and Sergi Bruguera’s 6-0, 6-0, 6-0 victory over Thierry Champion at the 1993 French Open — widely cited as the last time it happened at Grand Slam level. Even a “double bagel” (6-0, 6-0 in a best-of-3 match) is rare enough to make headlines whenever it happens on tour today.
Quick Recap: Tennis Scoring at a Glance
| Level | How to Win |
|---|---|
| Point | Win the rally |
| Game | Reach 4 points, win by 2 |
| Set | Reach 6 games, win by 2 (or win a tiebreak at 6-6) |
| Match | Win 2 of 3 sets, or 3 of 5 sets |
Once you’ve got the game-set-match structure down, tennis stops feeling like a foreign language and starts feeling like one of the most tension-filled scoring systems in sport — every single point can flip momentum.
FAQs: Tennis Scoring System
What does “love” mean in tennis?
“Love” simply means zero. It likely comes from the French word “l’oeuf” (egg), which resembles a zero, though this origin is debated among tennis historians.
What happens if the score is 40-40?
The game moves to “deuce.” From deuce, a player must win two consecutive points to take the game — the first point earns “advantage,” and the second wins the game.
Do all tennis matches use tiebreaks?
Almost all use tiebreaks at 6-6 to decide non-deciding sets. Deciding (final) sets vary by tournament — some use a standard 7-point tiebreak at 6-6, while others (like recent Grand Slam rules) use a 10-point match tiebreak or, in rare legacy formats, play games out until a 2-game lead is reached.
Is tennis scoring the same for singles and doubles?
The point, game, and set structure is identical. The main difference in doubles is that many tournaments use no-ad scoring and a 10-point match tiebreak instead of a full third set.
Why does the server’s score get called first?
It’s simply the long-standing convention in tennis — the umpire (or players in informal matches) announces the server’s score before the receiver’s, e.g., “30-15” means the server has 30 points, and the receiver has 15.
Can a tennis match end in a tie?
No. Every layer of tennis scoring — games, sets, and matches — requires a player to win by a clear margin (or via tiebreak), so there’s always an outcome.
For more on how specific tournaments run their scoring and formats, check out our coverage of the US Open 2026, or browse our Tennis section for player news, Grand Slam guides, and more from the world of tennis.
