A tennis point starts with a serve that must land in the diagonal service box. Players then alternate shots, and each ball must be hit before it bounces twice. Points are scored 15, 30, 40 and game, a set is usually first to 6 games by 2, and matches are best of three or five sets.
Key rules
| Rule | Summary |
|---|---|
| Scoring | 0 (love), 15, 30, 40, game; deuce at 40-40 |
| Sets | First to 6 games by 2; tiebreak at 6-6 |
| Serve | Two attempts; stand behind the baseline; land in the diagonal box |
| Let | Serve touches the net and lands in; replayed |
| Foot fault | Touching the baseline or court before hitting the serve |
| In or out | A ball touching any part of the line is in |
| Changing ends | After the first game and every two games; every six points in a tiebreak |
You lose the point if
- The ball bounces twice on your side before you hit it.
- You hit the ball out or into the net.
- You touch the net, or the ball touches you, while the ball is in play.
- You hit the ball before it crosses the net to your side.
- You double fault on serve.
Rules reference: ITF Rules of Tennis. National federations (such as the USTA) and tours may add their own regulations.
Frequently asked questions
What is deuce?
40-40. A player must win two points in a row from deuce to win the game.
Can the ball hit the net during a rally?
Yes. If it crosses and lands in, play continues; only on the serve is it a let.
How long is a tennis match?
Most are best of three sets; men’s Grand Slam singles are best of five.
