Here are the common questions and answers (FAQ) for the basic ping pong rules. If you are new to this sport, you should read these table tennis regulations. If not, test yourself if you can answer all of these questions “Ping Pong Rules for Dummies”. If you want a simple list of competition ping pong rules, you can download it here (ping pong basic rules.pdf).
Updated: September 2021
Ping Pong basic rules
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These are the basic rules and laws of table tennis that every new player should know. For the official regulation of the table tennis equipment, read “table tennis official serving rule”.
How many games in table tennis?
It depends. In a national and regional competition, there are 3 to 5 games in a match. The game is a best-of-3 match. The first player who wins 3 matches will win. The typical game score is 3-0, 3-1, 3-2.
But in some official tournaments, like ITTF, WTT tournaments, there are 4 to 7 games in a match. It is a best-of-4 match. The first player who wins 4 matches will win. The typical game score is: 4-0, 4-1, 4-2, 4-3.
How many points are in table tennis?
In history, a game in table tennis has in general 21 points. But today, the rule is changed. There are 11 points in a table tennis game.
How many lets in table tennis?
You can have as many lets as possible in table tennis. There are no specific rules for the number of lets in table tennis.
How much does a table tennis ball weigh?
The table tennis ball has a diameter of 40 millimeters and a mass of 2.7 grams (0.095 oz) (1.57 in).
How many serve in table tennis?
In every game of table tennis, each player needs to serve 2 times. And the next play, the opponent will serve 2 times.
If one player wins 11-0, so there is a minimum of 11 serves in a table tennis game. If the score is 11-9, there are 19 serves in a close match.
How many table tennis players are in the world?
There are no official numbers. The number of table tennis players is estimated at about 950 million to 1.3 billion players (estimated in 2021).
How many faults in table tennis?
A fault is a serve that doesn’t follow the serving rule. There is no limit to the number of faults in table tennis.
1. Serving Rules
What is a legal serve?
The ball must rest on an open hand palm. You must toss the ball at least 6 inches (about 16 cm) upward. You must hit the ball outside of the table surface. The server serves 2 times and then the opponent serves. Read more about the Serving Rule.

Can the ball hit the net on a serve?
There are 2 situations: 1. If the ball touches the net, and touches the opponent’s side. It’s called a “let serve”! You serve again! And you won’t lose the point! It’s legal! 2. If the ball touches the net and drops to the floor! You lose the point!

Do I have to serve diagonally?
Yes and No! Yes in Double Games. No in Single! In tennis, squash, and badminton you must serve diagonally but in table tennis singles you can serve wherever you like.

“Net serve” or “Let serve”?
If the ball touches the net, it is called a “let serve” (Don’t call it as “Net serve”).

Serve 3 times?
Question: Can I serve more than 3 times in a row?
Do I lose the point if I make more than 3 services that touch the net? In some countries that I visited (mostly in Indonesian, Vietnam, Malaysia), some amateur players make the rule. If you serve more than “3 times let serve”, you lost the point!
Answer: No, wrong! It’s legal! You can serve as many “let serve” as you can!

Bounce back serve
Is it possible for the ball to bounce back to the server’s side in a legal serve? Yes! It’s the heavy backspin serve. Search for “Ma Lin Ghost serve”. It’s legal! And if the opponent won’t touch the ball before it bounces back, you won the point!

Hit the long serve?
Is it legal to hit the long serve before it touches my side? There are two situations:
- If the server does a too long serve, the ball goes out of the table (didn’t touch your table’s side) and the ball accidentally touches your racket. In general, you win the ball.
- But during a rally, if you hit the ball before it touches your table’s side (it’s called “volley”) you lose the point!

2. Scoring Rules
How to finish a set?
A game or match has several sets. Each set finish when one player reaches 11 points or 2 points win after 10-10 scores.

Deuce rule
If a score of 10-10 is reached, then each server serves only one point (but not two).
Switch side rule
In the final game (for example, the set is 2-2 in the best-of-3 or 3-3 in the best-of-7), the players switch sides after one player reaches 5 points.

3. Rally Rules
Can I volley the ball?
No, you can’t volley the ball in table tennis. You must wait for the ball to touch your side and then hit the ball. If you hit the ball before it lands on your side, you lose this point.

What is the edge ball?

During the rally, if the ball touches the edge of the opponent’s table, it’s called the “edge ball”. Be careful! There are 2 types of edge ball!
- If the ball touches the “playing surface”, normally the ball will bounce up. Then it’s the edge ball for you, and you win the point. If the ball hits the corner and bounces up, you win the point!
- But if the ball touches the edge, but at the side of the table. Normally, the ball won’t bounce up, then you lost the point.
Legal rally in table tennis?

In table tennis, all shots are “Half-volleys”, which means the ball must touch your side before you hit it.
Play with another hand?
Question: Is there any violation of rules if I serve with the racket in the left hand and play with the right hand in table tennis?
Answer: No! You can change your hand during the rally. But you are allowed to play with only 1 racket. You can’t play with 2 rackets on the 2 hands. Timo ball often changes his racket from one hand to other while playing. And it’s amazing!

Touch the table?
Question: Can I touch the table with my free arm during playing?
Answer: No! Unless the rally is a let, a player shall score a point if his opponent’s free hand touches the playing surface. This means that if you touch the playing surface (i.e. the top of the table) with your hand which is not holding your racket whilst the ball is still in play, you lose the point.

The ball touches the net
Question: Who wins the point if the ball touches the net?
Answer: There are 2 scenarios:
- During the service, if the ball touches the net and jumps on the opponent’s side, it is called a let serve. Let serves are not scored. The player needs to serve again.
- But if the ball touches the net but jumps outside of the table (didn’t touch any part of the table), then the server lost the point.
Can I hit the ball before it bounces in table tennis?
Watch the “Volley Section” below! In general, no! In table tennis, all the shots are “half-volley”!
4. Double Rules
What are serving rules in double games?
Question: “When you’re in doubles, and you serve good but the ball hits the net and jumps because of your effect on the wrong side of the opponent’s table. Is it just a let serve? Or is it fault serve because the bounce wasn’t diagonal? Thank you!”
Answer: it’s a fault serve. and you lose the point.

References:
- USATT Ping Pong Rules, Coastal Carolina University
- Table Tennis Serving Rules
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How many sets are their?
There are normal best of 3, and then best of 7 sets.
In doubles, the server serves but the ball hit the net and going to left side of the court. Then opponent catches over the early left side (wrong side of table) of table.
Is it LET or the server gets point?
If the ball touches the net, and go to the wrong side. It’s a fault serve! The server lost this point!
But if the opponent played the point (before the ball touches), then it’s a normal rally.
Thanks
In double, suppose the order of service in the first SET is as follow:
X1>X2>Y1>Y2>X1>X2…
As I understand, on the second SET the server player can be choosen, but not the receiver. Suppose anyway that the order of service become:
X2>X1>Y2>Y1>X2>X1…
What happen on the third SET, supposing that the server order does not get changed?
X1>X2>Y1>Y2>X1>X2… (like the first SET) or Y1>Y2>X1>X2>Y1…