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Thursday, February 21, 2008

JUGS Spin Remote Tennis Machine with FREE UPS

The JUGS Spin Tennis Machine is perfect for use with any skill level, from beginner to professional. With JUGS Spin Tennis Machine, you can instantly regulate the spin, (top or back), speed, height, and direction of the ball. You can duplicate deep ground strokes, high lobs, half volleys and close-to-the-net volleys with uncanny precision. With its easy-to-use control panel, varying between crosscourt and down-the-line shots has never been easier. With JUGS Spin Tennis Machine spin control, players can develop a solid and reliable game against flat balls and balls with variations in spin. Spin, Oscillation and Elevation Controls along with the JUGS Spin Tennis Machine legendary dual wheel design makes this machine ideal for beginners and advanced level players.

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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.

Table :
The table is 2.74 m (9 ft) long, 1.525 m (5 ft) wide, and 76 cm (30 inch) high with a Masonite (a type of hardboard) or similarly manufactured timber, layered with a smooth, low-friction coating. The table or playing surface is divided into two halves by a 15.25 cm (6 inch) high net.

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

Inverted (non-Chinese):
This is the most widely used rubber type. The surface is smooth, with the pimpled side facing inwards toward the blade. This enables the player to generate high levels of spin and speed. Spin is generated not by the action of the topsheet alone, but also by the ball sinking into the sponge and allowing greater surface area to contact the ball.
Inverted (Chinese):
Chinese rubbers typically have stickier (or "tackier") topsheets. Spin is generated mainly by the topsheet, as opposed to the sponge, which is relatively more condensed and firmer. The result is usually a far better short game and potential offensive capabilities than normal inverted, but also a less consistent defensive and/or counter play.
Short pimples (or "pips"):
Short pimples-out rubbers are usually used by close-to-the-table hitters (for example, Liu Guoliang). They do not generate as much spin as inverted rubbers, but also make the user less susceptible to the opponent's spin. Speed generated from a short pip rubber is generally greater than that of an inverted with the same sponge. Depending on the thickness of the sponge it is also possible to play a chopping game with short pimples by varying the spin of the return. Whilst blocking and attacking a "dead ball" effect is often noticed. Ding Song is an exponent of this style.
Long pimples (or "pips"):
Long pimples-out rubbers carry relatively long and soft pips. They do not have the ability to generate any real spin of their own, but feed off of the opponent's spin instead. This allows the user to confuse the opponent and upset their rhythm. Long pips rely on the opponent's oncoming spin, as they tend to "continue" the opponent's spin, by bending upon impact, rather than reversing or changing the spin, like inverted rubbers. Long pips are usually used by close-to-the-table blockers, or choppers, but, in some cases, they can be used away from the table for long distance chops. They are usually only used on the backhand side, as they offer very limited attacking capabilities. Depending on the grip of the sides of the pimples and the thickness of the sponge it is also possible to play an aggressive game with long pips, although without much spin capability.
Anti-spin:
Anti-spin rubbers may look similar to the inverted ones, but their surfaces are very slick and frictionless. Like long pimples, they cannot generate much spin. Anti-spin is also not very susceptible to the opponents oncoming spin, due to the low coefficient of friction of the rubber's surface, as well as the incredibly soft sponge, which is designed to cushion or absorb the speed of the ball upon impact. This is also used to confuse the opponent, and is not widely used at the international level.

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.On 25th May 2007 the ITTF withdrew approval for all table tennis glues. As of 1st January 2008, the ITTF began testing in ITTF Junior events for illegal amounts of volatile organic solvents. The ITTF will begin testing of all other ITTF events on 1st September 2008.

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, 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).
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.

Hitting the ball :
Any hitting of the ball must be done such that the ball passes over or around the net. 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.

Alternation of service :
Service alternates between opponents every two points (regardless of winner of the rally) until a player reaches 11 points with at least a two-point lead, or until both players have 10 points a piece. If both players reach 10 points, then service alternates after each point, until one player gains a two-point advantage.
In doubles, service alternates every two points between sides, but also rotates between players on the same team. At the end of every two points, the receiving player becomes the server, and the partner of the serving player becomes the receiver.
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.

History

The game has its origins in England as an after-dinner amusement for upper-class Victorians in the 1880s. Mimicking the game of tennis in an indoor environment, everyday objects were originally enlisted to act as the equipment. A line of books would be the net, a rounded top of a Champagne cork or knot of string as the ball, and a cigar box lid as the racket[citation needed].
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 "whiff-whaff" 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 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."
Toward the end of 2000, the ITTF 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. 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. Secondly, the ITTF changed from a 21 to an 11 point scoring system. 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 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. The ball's mass is 2.47 grams.
There is a move towards reviving the table tennis game that existed prior to the introduction of sponge rubber. Classic table tennis or "Hardbat" table tennis players reject the speed and spin of reversed sponge rubber, preferring the 1940-60s style of no-sponge, short pimpled rubber of play which makes defense 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 be successful.

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. 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. Japanese penholders will often use a square-headed racket for an away-from-the-table style of play. 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 traditional penhold backhand weakness.

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.

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

Competition

Competitive table tennis is popular in Asia and Europe and has been gaining attention in the United States. 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.

 
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