How Tennis Scoring Works: Points, Games, Sets and Tiebreaks

Tennis has one of the most distinctive and, at first, confusing scoring systems in sport. Numbers like 15, 30, and 40 seem to appear from nowhere, and terms like "deuce" and "love" puzzle newcomers. But the system is logical, and once you learn it, following a match becomes effortless.

Tennis is scored in a nested structure: points make up games, games make up sets, and sets decide the match. You have to understand each layer in turn.

The smallest unit is the point. Within a game, the score climbs through a peculiar sequence. Zero points is called "love." The first point won takes a player to 15, the second to 30, and the third to 40. The fourth point normally wins the game, provided the player is ahead by at least two points. So a clean game might run 15, 30, 40, game. The odd numbering is a historical quirk with no impact on how the game is played; you simply memorise the ladder of love, 15, 30, 40.

Complications arise when both players reach 40, which is called "deuce." From deuce, a player must win two points in a row to take the game. Winning the first point from deuce gives that player the "advantage." If they win the next point too, they win the game; if they lose it, the score returns to deuce. This can continue for many exchanges, which is why a single game can become a long, tense battle.

The next layer is the set. To win a set, a player must win six games, and, just like points within a game, they must be ahead by at least two games. So 6-4 wins a set, but 6-5 does not; the players continue. If the set reaches 6-6, it is usually decided by a tiebreak. In a tiebreak, players compete to reach seven points (again winning by two), and here the scoring reverts to normal counting, 1, 2, 3, and so on. The tiebreak is a neat way to settle an otherwise deadlocked set without it running on indefinitely.

The final layer is the match. Matches are played as best of three sets or best of five sets. In a best-of-three match, the first player to win two sets wins the match; in best of five, they must win three. Most professional matches use best of three, while the men's singles at the four Grand Slam tournaments is traditionally best of five, which is why those matches can last several hours.

Serving adds another rhythm to the scoring. Players alternate who serves each game, and the server is generally expected to win their service game. When a player wins a game against the opponent's serve, it is called a "break of serve," a pivotal moment because it disrupts the expected pattern and often decides sets.

There are small variations between tournaments, such as different rules for deciding the final set, and doubles has its own tweaks, but the core structure is universal. Points to 40 and beyond, six games to a set, best of three or five sets to a match.

Once this clicks, the drama makes sense. You understand why breaking serve matters so much, why deuce games are so tense, and why a tiebreak feels like sudden-death pressure. The strange numbers stop being a barrier and become part of tennis's unique character.