Tennis scoring explained

Nobody knows for certain why tennis counts points this way — the most-cited theory ties it to a medieval clock face divided into quarters (15, 30, 45, shortened over time to 40), but it's folklore more than documented fact. What matters practically: the first three points won in a game are called 15, 30, and 40; the fourth point wins the game outright — unless the score is tied at 40-40.

A 40-40 tie is called deuce. From deuce, a player must win two points in a row to take the game: win one point and you have "advantage"; win the next and you take the game, but lose it and the score returns to deuce. This can repeat indefinitely, which is exactly why some marathon games take forever.

Win six games to win a set — but you must win by at least two games (6–4 is a valid set score, 6–5 is not). If it reaches 6–6, most sets are decided by a tiebreak: first to 7 points, win by 2. Men's Grand Slam matches are best-of-five sets; almost everything else, including women's Grand Slam matches and most tour-level events, is best-of-three.

The final set is where formats diverge most: Wimbledon and most tournaments now use a 10-point final-set tiebreak at 6-6, while some events still play a full advantage set (no tiebreak, just keep going until someone's two games clear) — always worth checking a specific tournament's rules before a final set gets tense.

A result like 6–4, 3–6, 6–2 means the match went three sets, with the winner named first taking sets one and three. A score in brackets after a set, like 7–6(7–5), tells you that set went to a tiebreak and shows the tiebreak's own score.

Tennis scoring makes a lot more sense once you've watched a full game unfold rather than just memorized the terms. Sportoum's Tennis lessons walk through live-scored rallies so the 15-30-40-deuce rhythm becomes second nature.