The game is played on a 274 cm × 152.5 cm × 76 cm high (9 ft × 5 ft × 30 inches high) playing surface. The International Table Tennis Federation requires an area not less than 14 m long, 7 m wide and 5 m high for competitions. No limitations in size or shape are specified. Modern rackets usually have a thin layer of rubber covering the racket's striking surface. The rubber may have pimples pointing outwards or inwards, as well as a thin layer of sponge between the plywood center and the rubber surface. Since spin plays a large role in the modern sport of table tennis, the composition of the rubber and the combination of sponge and rubber is designed to maximize the amount of spin and speed a player can impart onto the ball. Other technological improvements include the use of carbon or other synthetic layers as part of the blade to increase the size of the sweet spot or the stiffness of the blade.

The ball used in table tennis has a diameter of 40 mm, is made of celluloid, and is hollow. A three star rating on a ball usually implies a top quality ball, in relation to its bounce, roundness and their respective consistency between balls of the same make and type.

The name "ping-pong" was in wide use before English manufacturer J. Jaques & Son Ltd trademarked it in 1901. The name "Ping-Pong" then came to be used for the game played by the rather expensive Jaques equipment, with other manufacturers calling theirs table tennis. A similar situation came to exist in the United States where Jaques sold the rights to the "Ping-Pong" name to Parker Brothers.

The next major innovation was by James Gibb, an English enthusiast of the game, who discovered novelty celluloid balls on a trip to the U.S. in 1901 and found them to be the ideal balls for the game. This was followed by E.C. Goode who in 1903 invented the modern version of the racket by fixing a sheet of pimpled, or stippled, rubber to the wooden blade. Table tennis was growing in popularity by 1901 when table tennis tournaments were being organized, books on table tennis were being written, and an unofficial world championship was held in 1902. During the early 20th century the game was banned in Russia due to a belief that was held by the rulers at the time that playing the game had an adverse effect on players' eyesight. In 1921, the Table Tennis Association was founded in England, and the International Table Tennis Federation followed in 1926. London hosted the first official world championship in 1927. Table tennis was introduced as an Olympic sport at the Olympics in 1988.

In the 1950s rackets that used a rubber sheet combined with an underlaying sponge layer changed the game dramatically, introducing greater spin and speed. These were introduced to England by the sports goods manufacturers S.W. Hancock Ltd. The use of speed glue increased the spin and speed even further, resulting in changes to the equipment to "slow the game down."

Equipment

Ball

The international rules specify that the game is played with a light 2.7 gram, 40 mm (formerly 38 mm) diameter ball. Generally, it is the most-used ball. The ball is required to have a coefficient of restitution (the ball will only bounce a certain percentage of what it did last time, in this case 94%) of 0.94. The 40 mm ball was introduced after the 2000 Olympic Games. However, this created some controversy as the Chinese National Team argued that this was merely to give non-Chinese players a better chance of winning. A 40 mm table tennis ball is slower and spins less than a 38 mm one. The ball is made of a high-bouncing gas-filled celluloid ball, colored white or orange, with a matte finish. The choice of ball color is made according to the table color and its surroundings. For example, a white ball is easier to see on a green or blue table than it is on a grey table. A star on the ball indicates the quality of the ball. 3 stars indicates that it is of the highest quality.

Racket

Players are equipped with a wooden blade covered with rubber on one or two sides depending on the grip of the player. This is called either a paddle, racket or bat depending on where in the world the game is being played. In the USA the term "paddle" is common, in Europe the term is "bat," and the official ITTF term is "racket." This section will use the ITTF term.

Table tennis regulations allow different surfaces on each side of the racket. The different types of surfaces provide various levels of spin or speed, or in some cases, nullify spin. For example, a player may have a rubber that provides much spin on one side of his racket, and no spin on the other side of the racket. By flipping the racket in play, different types of returns are possible. To help a player distinguish between different types of rubber used by his opposing player, international rules specify that one side must be red while the other side must be black. The player has the right to inspect his opponent's racket before a match to see the type of rubber used and what color it is. Despite high speed play and rapid exchanges, a player can see clearly what side of the racket was used to hit the ball.

Recent years have seen an advancement in technology of table tennis blades. Materials of different properties may be combined with the wood in the blade to enhance its playing performance. Many blades today feature one or more carbon layers within them to enhance their 'sweet spot', and to give the player a greater margin of error when playing powerful shots. Materials incorporated into table tennis blades today include titanium, acrylate, aramids, and aluminium.

The rubber coating may be of pimpled rubber, with the pimples outward, or it may be a rubber that is composed of two materials, a sponge layer, covered by a pimpled rubber, with the pimples pointed inwards or outwards. Some rackets are not covered with rubber at all, because a "naked" racket is believed to be more resistant to a spin. However, it is illegal to use these types of racket in competition as they are not approved by the ITTF. Some types of rubbers are also not approved. Approved rubbers have the ITTF emblem on the base of the rubber.

 Players have many choices and variations in rubber sheets on their racket. Although a racket may be purchased with rubber by the manufacturer, most serious tournament players will create a customized racket. A player selects a blank blade (i.e. a racket without rubber), based on his playing style. The type of wood and synthetic layers used to make up the blade will provide a slower or faster blade. The player can choose from different types of rubber sheets which will provide a certain level of spin, speed and specific playing characteristics.

Normally, a sheet of rubber is glued to a blade using rubber cement and not removed until the rubber wears out or becomes damaged. In the 1980s, a new technique was developed where the player would use a special glue called speed glue to apply the rubber every time he played. The glue would help provide more spin and speed by providing a "catapult" effect. This technique is known as "regluing" and has become a standard technique for top players.

The surface of a racket will develop a smooth glossy patina with use. The rubber surface needs to be regularly cleaned to ensure it retains a high friction surface to impart spin to the ball. Players use a commercial cleaner, or just water and detergent as cleaning agents. Racket construction and new rubber technology (skilled elite players typically select and attach the rubber to their own rackets and glue them before every match) contribute significantly to the amount of deviation from the expected ball flight path. The fairly recent development of speed glue speeds up the departure of the ball from the rubber considerably, though at the cost of some ball control on touch shots where little or no spin is put on the ball. Different types of rubber sheets include Inverted (non-Chinese, Inverted (Chinese), Short pimples (or "pips), Long pimples (or "pips"), Anti-spin.

Glue

In Japan, JTTA changed a policy of the glue which is used to glue rubbers and racket in September 2006. Using glues and rubber cleaner which contains some volatile organic solvents is banned in a game place, except where allowed to use them. A game place means that all of grounds, including a parking area. On the other hand, the glues ITTF or JTTA authorized can be used in a place which is located to use them. From September 1st, no one can be allowed to use the glues that contain some volatile organic solvents.

Game play

Starting a game

In top-flight competition, service is decided by a coin toss. At lower levels it is common for one player (or the umpire/scorer) to hide the ball in one or the other hand (usually hidden under the table), allowing the other player to guess which hand the ball is in. The correct or incorrect guess gives the "winner" the option to choose to serve, receive, or to choose which side of the table to use.

Service

In game play, the player serving the ball commences a point. Standing so that the ball is held behind the endline of the table, with the ball in the palm of the free hand - over the table's height - and the racket in the other, the server tosses the ball without spin, upward, at least sixteen centimeters (approximately 6 inches). In casual (non-tournament) games, many players do not toss the ball upward.

He or she then must hit the ball such that it bounces once on his or her half of the table, and then bounces at least one time on the opponent's half. If the ball strikes the net but does not strike the opponent's half of the table, then a point is awarded to the opponent. However, if the ball hits the net, but nevertheless goes over and bounces on the other side, it is called a let (or net-in). Play stops, and the ball must be served again with no penalty. A player may commit any number of lets without penalty.

If the service is "good", then the opponent must then make a "good" return — by returning the ball before it bounces on his or her side of the table a second time. Returning the serve is one of the most difficult parts of the game, as the server's first move is often the least predictable and thus most advantageous to him or her.

Hitting the ball

Any hitting of the ball must be done such that the ball passes over or around the net. (A ball that passes under the net clamps is considered to have passed over or around the net, according to Law 2.5.14). If the ball is struck such that it travels around the net, but still lands on the opponent's side of the table, the hit is legal and play should be continued. If the opponent cannot return it over (or around) the net and make it bounce on your side, then you win the point.

Scoring

Points are awarded to the opponent for any of several errors in play:

• Allowing the ball to bounce on one's own side twice
• Double hitting the ball. Note that the hand above the wrist is considered part of the racket and making a good return off one's hand or fingers is allowed, but hitting one's hand or fingers and subsequently hitting the racket is a double strike and an error.
• Allowing the ball to strike anything other than the racket (see above for definition of the racket)
• Causing the ball not to bounce on the opponent's half (i.e., not making a "good" return)
• Placing one's free hand on the playing surface or moving the playing surface
• Offering and failing to make a good serve (i.e., making a service toss and failing to strike the ball fairly into play)
• Making an illegal serve: (e.g., one preceded by a player's hiding the ball or his failing to toss the ball at least 16 centimeters (six inches) in the air).
• Hitting the net with racket or any body part, or moving the table.

In the older 21-point game system, service would alternate every 5 points. If both players reached a score of 20, then service would alternate each point until one player gains a two-point advantage.

Series of games

After each game, players switch sides of the table and in the fifth or seventh, game "for the match", players switch sides when the first player scores 5 points, regardless of whose turn it is to serve. In competition play, matches are typically best of five or seven games.

Doubles game

In addition to games between individual players, pairs may also play table tennis. In doubles, all the rules of single play apply except for the following. A line painted along the long axis of the table to create doubles courts bisects the table. This line's only purpose is to facilitate the doubles service rule, which is that service, must originate from the right hand "box" in such a way that the first bounce of the serve bounces once in said right hand box and then must bounce at least once in the opponent side's right hand box (far left box for server). Play then continues normally with the exception that players must alternate hitting the ball. For example, after a player serves the receiving player make his or her return, the server's partner returns the ball and then the service receiver's partner would play the ball. The point proceeds this way until one side fails to make a legal return and the point is then awarded to the other team. Also, when the game reaches the final set, the teams must switch side and the team that receives the service must switch receiver when one of the teams reach 5 points. Singles and doubles are both played in international competition, including the Olympic Games since 1988 and the Commonwealth Games since 2002. In 2005, the ITTF announced that doubles table tennis will only be featured as a part of teams events in the 2008 Olympics.

Styles of play

Grip

Competitive table tennis players grip their rackets in a variety of ways. The manner in which competitive players grip their rackets can be classified into two major families of styles. One is described as penhold, and the other shakehand. The Laws of Table Tennis do not prescribe the manner in which one must grip the racket, and numerous variations on gripping styles exist.

Penhold

The penhold grip is so-named because one grips the racket similarly to the way one holds a writing instrument. The style of play among penhold players can vary greatly from player to player. The most popular style, usually referred to as the Chinese penhold style, involves curling the middle, ring, and fourth finger on the back of the blade. The amount of curl in the fingers can vary from clenched, to almost perfectly straight. The three fingers however, will always remain touching one another. Chinese penholders favour a round racket head, for a more over-the-table style of play. In contrast, another style, sometimes referred to as the Japanese penhold grip, involves splaying those three fingers out across the back of the racket, usually with all three fingers touching the back of the racket, rather than stacked upon one another. Japanese penholders will often use a square-headed racket for an away-from-the-table style of play. Traditionally these square-headed rackets feature a block of cork on top of the handle, as well as a thin layer of cork on the back of the racket, for increased grip and comfort. Penhold styles are popular among players originating from Asian regions such as China, Taiwan, Japan, and South Korea.

Traditionally, penhold players use only one side of the racket to hit the ball during normal play. The side which is in contact with the last three fingers is generally not used. However, the Chinese have developed a new technique in which a penholder utilizes both sides of the racket. This is referred to as the Reverse penhold backhand (RPB) where the player produces a stroke (most often topspin) by turning the traditional side of the racket to face him or herself, and swinging, with a backhand motion, using the opposite side of the racket. This stroke has greatly improved and strengthened the penhold style both physically and psychologically, as it eliminates the strategical weakness of the traditional penhold backhand.

Shakehand

The shakehand grip is so-named because one grips the racket similarly to the way one performs a handshake. The grip is sometimes colloquially referred to as a "tennis grip" or a "Western grip," although it has no correlation to the Western grip used in Tennis. The shakehand grip is most popular among players originating in Western nations. Today, though, there are many Asian players using the shakehand grip, as it can be viewed as strategically and technically superior.

Types of shots

In table tennis, the strokes break down into generally offensive (producing topspin) and defensive (producing backspin). Spin exceptions are the smash, block, and lob. The types of strokes include backhand and forehand.

Offensive strokes

Speed drive

These strokes differ to ones from other racket sports like tennis. The racket is primarily perpendicular to the direction of the stroke, and most of the energy applied to the ball results in speed rather than spin, creating a shot that does not arc much, but is fast enough that it can be difficult to return. A speed drive is used mostly for keeping the ball in play, applying pressure on the opponent and potentially opening up an opportunity for a more powerful attack.

Loop drive

essentially the reverse of the speed drive. The racket is much more parallel to the direction of the stroke ("closed") and the racket thus grazes the ball, resulting in a large amount of topspin. A good loop drive will arc quite a bit, and once striking the opponent's side of the table will jump forward, much like a kick serve in tennis. A loop drive is dangerous because of its topspin — while not as difficult to return as a speed drive, it is more likely to rebound off the opponent's racket at a very high angle, setting up an easy smash on the follow up. As the loop drive requires a lot of topspin, players generally use their entire body to generate the movement required. Variations in spin and speed add to the effectiveness of this shot.

Chinese players categorize loop-drives in 3 variations based on trajectories:

1. The "Loop"

The "Loop" produces a more pronounced loopy arc, with a higher trajectory and extreme topspin, but is typically slower.

2. The "Rush"

Produces a flatter trajectory than a typical "Loop" but carries much stronger topspin than a regular speed-drive. It can be as fast as a speed-drive, and in modern table tennis has come to replace it in virtually all cases. The ball seems to "rush" forward and downward upon hitting the table (compared to the "kicking" or "jumping" actions resulted from the high-arc "Loop"), and hence the nickname.

3. The "Hook"

Similar to a regular Loop, but carries a tilted topspin (or is referred as the "top-side" spin), it bounces sideways and downward upon hitting the table. Similar but stronger than the defensive "side-drive" described below.

Counter drive

Usually a counter attack against drives (normally high loop drives). You have to close the racket and stay close to the ball (try to predict its path). The racket is held closed and near to the ball, which is hit with a short movement "off the bounce" (before reaching the highest point) so that the ball travels faster to the other side. If performed correctly, a well-timed, accurate counter-drive can be as effective as a smash.

Flip (or Flick in Europe)

When a player tries to attack a ball that has not bounced beyond the edge of the table, he/she does not have the room to wind up in a backswing. The ball may still be attacked, however, and the resulting shot is called flip because the backswing is compressed into a quick wrist action. A flip is not a single stroke and can resemble either a drive or a loop in its characteristics. What identifies the stroke is instead whether the backswing is compressed into a short wrist flick. Also known as "harai" in Japanese.

Smash

The offensive trump card in table tennis. A player will typically execute a smash when his or her opponent has returned a ball that bounces too high and/or too close to the net. Smashing is essentially self-explanatory — large backswing and rapid acceleration imparting as much speed on the ball as possible. The goal of a smash is to get the ball to move so quickly that the opponent simply cannot return it. Because the ball speed is the main aim of this shot, often the spin on the ball is something other than topspin. Sidespin can be used effectively with a smash to alter the ball's trajectory significantly, although most intermediate players will smash the ball with little or no spin. An offensive table-tennis player will think of a rally as a build-up to a winning smash; only a calculated series of smashes can guarantee a point against a good opponent. However, most players will be able to return at most one or two smashes consistently. Provided that the opponent is not too close to the table or too far away from the ball, a smash can be lobbed, chopped, blocked or even counter-looped, albeit with some difficulty. A player who smashes generally works out a series of smashes (and possibly drop-shots) to rush the opponent out of position, put him off balance, or both. Smashers who fail to do this find it difficult to win a point against an excellent defense.

Defensive strokes

Slice

The slice is analogous to the speed drive in some respects — it is very simple, usually used for keeping the point alive and creating offensive opportunities. A slice resembles a tennis slice: the racket cuts underneath the ball, imparting backspin and causing the ball to float slowly to the other side of the table. While not obvious, a slice can be difficult to attack because the backspin on the ball causes it to drop toward the table upon striking the opponent's racket – in order to attack a slice, a player must lift the ball back over the net. Often, the best option is to simply slice the ball back again, which repeats and results in slicing rallies. Otherwise, another option is to flip or drive the ball, only when it is far enough away from the net. Slicing can have its advantages, but it's a shot worth avoiding. Players should only slice when their opponent makes easy mistakes. Offensive players should only slice for variation and not for general rallies. A slice can easily be counter-looped into the opposite corner, if it doesn't drop short enough on the table. The goal of most player's slice is to make it too short to be attacked upon, rather than attempting to over-spin the opponent.

Chop

A chop or cut is the defensive, backspin counterpart to the offensive loop drive. A chop is essentially a bigger, heavier slice, taken well back from the table. The racket face points primarily horizontally, perhaps a little bit upward, and the direction of the stroke is straight down. The object of a defensive chop is to match the topspin of the opponent's shot with your own racket speed. A good chop will float nearly horizontally back to the table, in some cases having so much backspin that the ball actually rises. A chop such as this can be extremely difficult to return due to the enormous amount of backspin. Sometimes a defensive player can impart no spin on the ball during a chop, or frequently add right- or left-hand spin to the ball. This may further confuse his/her opponent. Chops are difficult to execute, but are devastating when completed properly because it takes a tremendous amount of topspin on a loop drive to return the ball back over the net.

Block

The block or short is a simple shot, barely worthy of being called a "stroke," but nonetheless can be devastating against an attacking opponent. A block is executed by simply putting the racket in front of the ball — the ball rebounds back toward the opponent with nearly as much energy as it came in with. This is not as easy as it sounds, because the ball's spin, speed, and location all influence the correct angle of a block. Disregarding the difficulty of a block, it is very possible for an opponent to execute a perfect loop, drive, or smash, only to have the blocked shot come back at him just as fast. Due to the power involved in offensive strokes, often an opponent simply cannot recover quickly enough, and will be unable to return his own shot blocked back to him/her. Blocks almost always produce the same spin as was received, which is nearly always topspin.

Push-Block

High level players may use what is called push block or active block, adding speed to the ball (with a small topspin movement). When playing in the Penhold Grip, many players use push blocks when being pressured on the backhand. Chinese pen-hold players refer it as push-block as they literally "push" their backhand forward, instead of simply blocking it.

Side Drive

This spin is alternately used as a defensive and offensive maneuver. The premise of this move is to put a spin on the ball either to the right or the left of the racket. The execution of this move is similar to a slice, but to the right or left instead of down. This spin will result in the ball curving to the side but bouncing in the opposite direction when the opponent returns it. Do not attempt a right-side spin (moving your arm to the right when hitting the ball) when too close to the left side of the table, and visa versa. To return, simply execute the same sided spin as your opponent just gave you.

Lob

The defensive lob is possibly the most visually-impressive shot in the sport of table tennis, and it is deceptive in its simplicity. To execute a lob, a defensive player first backs off the table 8-10 feet (2.5 to 3 m, advanced players sometimes go 20 feet or 6 m or more); then, the stroke itself consists of simply lifting the ball to an enormous height before it falls back to the opponent's side of the table. A lob is inherently a creative shot, and can have nearly any kind of spin you can imagine. Talented players use this fact to their advantage in order to control the point. For instance, though the opponent may smash the ball hard and fast, a good defensive lob could quite possibly be even harder to return due to the unpredictability (and heavy amounts) of the spin on the ball. Thus, though backed off the table by tens of feet and apparently running and leaping just to reach the ball, a good defensive player can still win the point using good lobs.

Stop

Stop (or drop shot) is a high level stroke, used as another variation for close-to-table strokes (like harai and slice). You have to position the bat close to the ball and just let the ball touch the racket (without any hand movement) in a way that the ball stays close to the net with almost no speed and spin and touches the other side of the table more than twice if the opponent doesn't reach it. This stroke should be used when opponents are far from the table and not prepared to get close to the table. This technique is most usually done by pen-holders and players who use long or short pimples. A very deceiving technique, this could result in the opponent failing to reach the ball after misjudging the distance of the ball. A perfectly executed stroke after a topspin sequence can win a point.

Competitive table tennis is popular in Asia and Europe and has been gaining attention in the United States. In the United States, every year there is a national ping pong championship held in Las Vegas. The most important international competitions are World Cup, World Championship, the Olympics and the ITTF Pro Tour, as well as continental competitions like European Championship, Euro Top-12, Asian Championship and Asian Games. China continues to dominate most world titles, while other strong teams come from East Asia and Europe including France, Germany, former Yugoslavia, Hong Kong, Japan, South Korea, Singapore, Sweden, and Taiwan.

There are also professional competitions at the clubs level. The national league of countries like China, Germany, France, Belgium and Austria are some of the examples being at the highest level. There are also some important international club teams competitions such as the European Champions League and its former competition, the European Champions Cup, which the top club teams from different European countries compete.

There are also competitions in table tennis variants: "Hardbat", in which all competitors use a racket with small pips-out rubber (sponge is not allowed); and "Large ball", where a 44 mm ball is used to decrease the speed.