Tennis has one of the most charming and confusing scoring systems in sport. Points climb in an odd sequence, games stack into sets, and sets decide the match, all wrapped in centuries-old terminology. Once the layers make sense, following a match from the first serve to championship point becomes genuinely satisfying.
Points: love, fifteen, thirty, forty
Within a single game, points are counted as love, fifteen, thirty, and forty. Love means zero, a term often traced to the idea of playing for love of the game rather than money, though its exact origin is debated. The unusual numbers are thought to descend from medieval clock faces, where a hand moved a quarter of the way around each point. Whatever the history, four clean points win a game, and the server score is always announced first, so thirty-fifteen means the server leads by a point.
Deuce and advantage
When both players reach forty, the score is called deuce. From deuce, one player must win two points in a row to take the game. Winning the first point gives that player the advantage; win the next and the game is theirs, but lose it and the score returns to deuce. This can repeat many times, which is why a single tight game can stretch on dramatically.
Games and sets
Games build into sets. To win a set you generally need six games with a margin of at least two, so a set can end 6-4 but not 6-5. If the score reaches 6-6, most sets are decided by a tiebreak.
- A standard tiebreak is played to seven points, again requiring a two-point margin.
- Players alternate serves in a set pattern during the tiebreak, switching ends every six points.
- The winner of the tiebreak takes the set 7-6.
Matches are then decided by sets. Most professional womens matches and many mens events are best of three sets, while the mens Grand Slam events are best of five. The first player to win the required number of sets wins the match.
Serving and changing ends
One player serves for an entire game, then the opponent serves the next, alternating throughout. Each server begins from the right side of the court and switches sides after every point. Players change ends of the court after the first game and thereafter every two games, a routine that balances any advantage from sun or wind.
Modern tweaks and reading the scoreboard
Scoring has evolved to keep matches manageable. Many tournaments now use a longer match tiebreak, played to ten points, to decide a final set instead of an endless run of games. Doubles events sometimes use no-advantage scoring, where a single deciding point is played at deuce to speed things up. Scorelines are written from the winner perspective across the row, so a result of 6-3, 4-6, 7-6 tells you the match went the full three sets and was settled by a tiebreak in the decider.
It is also worth knowing that the four Grand Slam tournaments have historically used slightly different rules for the final set, from long advantage sets to various tiebreak formats, before the sport moved toward a more standardised final-set tiebreak. This is why you may see a decider settled in different ways depending on when and where a match was played. Broadcasters usually display the current game score, the games in the set, and the sets won side by side, so scanning left to right tells you exactly how far along the match is.
To recap the ladder: points make a game, games make a set, and sets win the match. Keep an eye on who is serving, remember that ties usually need a two-point cushion, and the once-baffling scoreboard will read like a story with a clear beginning, middle, and end.