You hit a good forehand down the line, the ball lands near the baseline, your opponent shouts “out” and the point is gone. Was it out? Maybe. The real problem is that nobody on the court has an umpire, and for the next ten minutes the match is about the call, not the tennis.
That is what tennis etiquette is for. Most recreational tennis is self-officiated: you and the people across the net decide whether balls are in, what the score is and when to start. The rulebook covers the technical side, but a lot of the behaviour that makes a match enjoyable is unwritten. This guide gives you 15 of those rules in plain language, grouped by the moment they come up, so you can walk onto any court, from a public park to a social session, and play like someone who has done it before.
Where the “unwritten rules” come from
The official Rules of Tennis are published by the International Tennis Federation (ITF). They define the court, the scoring, faults and lets. They do not tell you how to behave when you are the only person who saw a ball clip the line.
In the United States, the USTA collects those customs in a document called The Code. It is written for matches without an umpire and says its principles apply in cases the ITF rules and the USTA regulations do not cover. The Code is American in name, but you will find the same ideas in club handbooks and national federations elsewhere, and they are what most players in Bangkok, Singapore or Bali mean when they say “just play fair”.
None of this is law. It is a shared agreement that makes a game between strangers work. That also explains why etiquette matters most in social tennis: when you do not know the other player, honesty and courtesy do the job of a referee. If you are new to this format, our guide to social tennis explains how it differs from competitive play.
Before you play
1. Arrive on time and ready
Courts are usually booked in blocks, and the next group often starts straight after you. Turn up a few minutes early, with your shoes on and your racket ready. Keeping three other people waiting is the quickest way to start a session badly.
2. Give a fair warm-up
The Code suggests offering your opponent a short, fair warm-up, and a warm-up is shared: hit to your opponent, not away from them. Aim for the middle, keep the pace comfortable and let them practise the shots they want, including a few serves. Do your own physical preparation before you arrive; our 10-minute warm-up routine covers it.
3. Agree the basics out loud
Who serves first, whether you play a full set or a time slot, whether you play a tiebreak at six games all. Two minutes of agreeing the format saves arguments later. In a casual match, say which scoring you will use rather than assuming it matches your opponent’s. If you want a refresher on standard scoring, see our beginner’s guide.
Line calls and scoring
4. Call it in when you are not sure
This is the rule that matters most. The Code’s principle is that any doubt is resolved in favour of the opponent. If any part of the ball touches the line, it is good, and you call a ball out only when you clearly see a gap between where it landed and the line. If you cannot tell, the ball was in. It will cost you an occasional point, and it will buy you a reputation as someone people want to play with.
5. You make the calls on your side of the net
You have the best view of balls landing on your side, so you make those calls, and your opponent makes the calls on theirs. In doubles, partners can confer quickly if they disagree, and if they still cannot agree, the benefit of the doubt goes to the opponent.
6. Make calls promptly and clearly
An “out” call is useful only if your opponent hears it in time. Say it loudly and straight away. Calling a ball out late, after you have already hit it back and lost the rally, is poor form.
7. Ask once, accept the answer
If you really believe a call was wrong, you may ask your opponent if they are sure. If they reaffirm it, The Code says to accept it and move on. Do not keep complaining or inspect the mark again. A polite question is respectful; arguing is not.
8. If you realise you made a bad call, correct it
Everyone makes mistakes. The decent response is to say so and give your opponent the point or replay it. USTA Southern California’s piece on etiquette tells the story of a college player who overruled his own call on match point, even though it cost him the match. You do not need to be playing a final to follow the same standard.
9. The server announces the score
Call the score before every first serve, loud enough for your opponent to hear. It keeps both people on the same page and corrects mistakes immediately instead of at the changeover.
Serving and pace of play
10. The server sets the pace, the receiver must be ready
The server decides when play starts, but a receiver who is not ready should make no effort to return the serve, as the USTA’s guidance puts it. As a server, wait until your opponent is set before you toss the ball. As a receiver, do not fake being ready and then complain about a quick serve.
Do not waste time either. Pick up balls quickly, move to your position and carry on. Long breaks between points slow the match for everyone, especially when other people are waiting for the court.
11. Replay the point when something interrupts it
If a ball rolls onto your court from another court, or something else clearly interferes with a point, stop and replay it. Do not take an advantage from someone else’s accident. If you are the one whose ball strayed onto another court, wait for a natural break and ask for it back politely rather than running across a live point.
Sharing the court and being a good doubles partner
12. Never cross a court during a point
When you need to retrieve a ball or walk to the other end, wait for the point to finish. Walk behind the back fences or along the side, and say “sorry” if you do interrupt. This applies in a park with four courts and at a club with fifty.
13. Keep noise down and phones off
A phone ringing mid-point, loud conversation between points and shouting across the courts are distractions. USTA Southern California lists letting a phone ring and yelling across the court among the things that count as poor form. Keep your voice low, keep the phone on silent and leave it in your bag.
14. Be a generous doubles partner
Doubles etiquette is mostly about people management. Encourage your partner after a double fault instead of showing frustration, agree who takes the middle ball, and never criticise their play in front of opponents. If you play mixed doubles, our mixed doubles guide has more on positioning and communication.
After the match
15. Shake hands and say thanks
Shake hands, or tap rackets, with your opponent at the end, win or lose. Credit good shots during the match too. A quick “good match” is plenty in a social setting. Afterwards, take your balls and bottles with you and leave the court tidy for the next players.
A quick checklist you can screenshot
| Moment | Do | Avoid |
|---|---|---|
| Arriving | Be early, ready to hit | Keeping others waiting |
| Warm-up | Hit to your opponent | Practising winners |
| Doubtful line call | Call it in | Guessing “out” |
| Before a serve | Announce the score | Serving before the returner is ready |
| Ball from another court | Replay the point | Taking an advantage |
| Doubles | Encourage your partner | Public criticism |
| End of match | Shake hands | Walking off without a word |
Common etiquette mistakes beginners make
New players are rarely rude on purpose. The most common problems are small:
- Calling balls out when unsure. Learn the “doubt means in” habit early.
- Forgetting the score. Announce it every point and it solves most disputes.
- Walking behind a live point to reach the next court. Wait for the point to end.
- Giving unrequested coaching. Unless someone asks, do not correct your opponent’s technique.
- Blaming the court, the balls or the sun. Everyone plays in the same conditions.
None of these will make a regular partner stop playing with you if you fix them quickly, and they are all easy to fix.
Etiquette in social and drop-in sessions
The rules are the same in a group session, with a few extras. Arrive on time so groups can be formed fairly, rotate as agreed, and match your intensity to the people you are playing with. A level-matched group, where everyone has a similar standard, takes much of the pressure off because nobody feels out of their depth or has to carry the court. Our guide to doubles strategy helps if you are heading into a lot of doubles.
That is the idea behind Breakers Open Play: level-matched, drop-in social tennis where you book a seat for your level, show up and play without needing a partner. Open Play runs in Bangkok for now, and the Open Play page explains how it works. You can see the next sessions in the Breakers app. If you are looking for a place to play in the city, the Bangkok court directory lists clubs and districts, and the format page shows how sessions are organised. Outside Bangkok, the club directory covers more cities.
The short version
If you remember only three things, make them these. When in doubt, call the ball in. Announce the score before every point. Treat your opponent the way you want to be treated on the next court. Those habits cover most of what people call etiquette, and they make every match, whether a casual hit or a league game, more enjoyable for both sides.
Sources
- USTA, “The Players’ Guide to Fair Play and the Unwritten Rules of Tennis” (The Code) — https://saz.usta.com/rules_and_regulations/code_of_conduct
- Tennis BC, “The Code for Unofficiated Matches” — https://www.tennisbc.org/wp-content/uploads/2016/01/The-Code-for-Unofficiated-Matches.pdf
- University of Georgia open textbook, “Tennis: Etiquette” — https://open.online.uga.edu/tennis/chapter/etiquette/
- USTA Southern California, “How Tennis Etiquette Shapes the Sport” — https://ustasocal.com/news/how-tennis-etiquette-shapes-the-sport/
Frequently asked questions
What are the unwritten rules of tennis?
They are the customs that cover what the official Rules of Tennis do not: how to make honest line calls, when to serve, how to avoid distracting people on the next court and how to treat your opponent. In the United States they are collected in a document called The Code, which says its principles apply where the official rules are silent. Most clubs around the world follow the same ideas.
What should I do if I am not sure whether a ball was out?
Call it in. The accepted principle in The Code is that any doubt is resolved in favour of your opponent, and a ball that touches any part of the line is good. You should only call a ball out if you clearly see space between the ball mark and the line.
Who announces the score in a casual match?
The server. Calling the score before each point stops the common argument about whether it is 30-15 or 15-30, and it gives your opponent a chance to correct you straight away.
Is it rude to ask my opponent if they are sure about a call?
No, if you do it politely and once. Under The Code you may ask whether the opponent is sure about a call you genuinely doubt. If they confirm it, you accept it and move on without further discussion.
What is good etiquette when playing in a group or drop-in session?
Arrive on time, rotate fairly, play at the pace of the group, keep encouragement positive and be gracious about line calls. Everyone there is giving up their free time, so a relaxed attitude matters more than the score.
