Table tennis, also known as ping-pong, is a sport in which two or four players hit a lightweight ball back and forth using table tennis rackets. The game takes place on a hard table divided by a net. Except for the initial serve, players must allow a ball played toward them only one bounce on their side of the table and must return it so that it bounces on the opposite side. Points are scored when a player fails to return the ball within the rules. Play is fast and demands quick reactions. A skilled player can impart several varieties of spin to the ball, altering its trajectory and limiting an opponent's options to great advantage.
Table tennis is governed by the worldwide organization International Table Tennis Federation (ITTF), founded in 1926. ITTF currently includes 217 member associations.The table tennis official rules are specified in the ITTF handbook. Since 1988, table tennis has been an Olympic sport, with several event categories. In particular, from 1988 until 2004, these were: men's singles, women's singles, men's doubles and women's doubles. Since 2008 a team event has been played instead of the doubles. In 2007, the governance for table tennis for persons with a disability was transferred from the International Paralympic Committee to the ITTF.

History

Parker Brothers Ping-Pong game.

The game originated as a sport in England during the 1880s, where it was played among the upper-class as an after-dinner parlour game.^[5][6] It has been suggested that the game was first developed by British military officers in India or South Africa who brought it back with them.A row of books were stood up along the center of the table as a net, two more books served as rackets and were used to continuously hit a golf-ball from one end of the table to the other. Alternatively table tennis was played with paddles made of cigar box lids and balls made of champagne corks. The popularity of the game led game manufacturers to sell the equipment commercially. Early rackets were often pieces of parchment stretched upon a frame, and the sound generated in play gave the game its first nicknames of "wiff-waff" and "ping-pong". A number of sources indicate that the game was first brought to the attention of Hamley's of Regent Street under the name "Gossima". The name "ping-pong" was in wide use before British 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's equipment, with other manufacturers calling it table tennis. A similar situation arose in the United States, where Jaques sold the rights to the "ping-pong" name to Parker Brothers. Parker Brothers then enforced their copyright on the term in the 1920's making the various associations change their names to "table tennis" instead of the more common, but copyrighted, term.
The next major innovation was by James W Gibb, a British enthusiast of table tennis, who discovered novelty celluloid balls on a trip to the US in 1901 and found them to be ideal for the game. This was followed by E.C. Goode who, in 1901, 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 to the extent that 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 1900s, the game was banned in Russia because the rulers at the time believed that playing the game had an adverse effect on players' eyesight.
In 1921, the Table Tennis Association was founded in Britain, and the International Table Tennis Federation followed in 1926.London hosted the first official World Championships in 1926. In 1933, the United States Table Tennis Association, now called USA Table Tennis, was formed.
In the 1950s, rackets that used a rubber sheet combined with an underlying sponge layer changed the game dramatically, introducing greater spin and speed. These were introduced to Britain by sports goods manufacturer 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". Table tennis was introduced as an Olympic sport at the Olympics in 1988.
After the 2000 Summer Olympics in Sydney, the International Table Tennis Federation instituted several rules changes aimed at making table tennis more viable as a televised spectator sport. First, the older 38 mm balls were officially replaced by 40 mm balls in 2000. This increased the ball's air resistance and effectively slowed down the game. By that time, players had begun increasing the thickness of the fast sponge layer on their rackets, which made the game excessively fast and difficult to watch on television. Second, the ITTF changed from a 21-point to an 11-point scoring system in 2001. This was intended to make games more fast-paced and exciting. The ITTF also changed the rules on service to prevent a player from hiding the ball during service, in order to increase the average length of rallies and to reduce the server's advantage.
Variants of the sport have recently emerged. "Large-ball" table tennis uses a 44 mm ball, which slows down the game significantly. This has seen some acceptance by players who have a hard time with the extreme spins and speeds of the 40 mm game.
There is a move towards reviving the table tennis game that existed prior to the introduction of sponge rubber. "Hardbat" table tennis players reject the speed and spin of reversed sponge rubber, preferring the 1940–60s play style with no sponge and short-pimpled rubber. Defense is less difficult by decreasing the speed and eliminating any meaningful magnus effect of spin. Because hardbat killer shots are almost impossible to hit against a skilled player, hardbat matches focus on the strategic side of table tennis, requiring skillful maneuvering of the opponent before an attack can become successful.