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Squash provides an excellent cardiovascular workout. In one hour of squash, a player may expend approximately 600 to 1000 [[calorie]]s (3,000 to 4,000 [[kilojoule|kJ]]),<ref name="santelmann2003">Santelmann, N. 2003. Ten Healthiest Sports - Forbes.com [http://www.forbes.com/2003/09/30/cx_ns_1001featslide.html?thisSpeed=20000] </ref> which is significantly more than most other sports and over 70% more than either general tennis or racquetball. The sport also provides a good upper and lower body workout by utilising both the legs to run around the court and the arms and torso to swing the racquet. In 2003, Forbes rated squash as the number one healthiest sport to play.<ref name="santelmann2003"/> However, some studies have implicated squash as a cause of possible fatal [[cardiac arrhythmia]] and argued that squash is an inappropriate form of exercise for older men with [[coronary artery disease|heart disease]].<ref> "Heart rate and metabolic response to competitive squash in veteran players: identification of risk factors for sudden cardiac death", European Heart Journal, Volume 10, Number 11, Pp. 1029-1035, [http://eurheartj.oxfordjournals.org/cgi/content/abstract/10/11/1029 abstract]</ref>
Squash provides an excellent cardiovascular workout. In one hour of squash, a player may expend approximately 600 to 1000 [[calorie]]s (3,000 to 4,000 [[kilojoule|kJ]]),<ref name="santelmann2003">Santelmann, N. 2003. Ten Healthiest Sports - Forbes.com [http://www.forbes.com/2003/09/30/cx_ns_1001featslide.html?thisSpeed=20000] </ref> which is significantly more than most other sports and over 70% more than either general tennis or racquetball. The sport also provides a good upper and lower body workout by utilising both the legs to run around the court and the arms and torso to swing the racquet. In 2003, Forbes rated squash as the number one healthiest sport to play.<ref name="santelmann2003"/> However, some studies have implicated squash as a cause of possible fatal [[cardiac arrhythmia]] and argued that squash is an inappropriate form of exercise for older men with [[coronary artery disease|heart disease]].<ref> "Heart rate and metabolic response to competitive squash in veteran players: identification of risk factors for sudden cardiac death", European Heart Journal, Volume 10, Number 11, Pp. 1029-1035, [http://eurheartj.oxfordjournals.org/cgi/content/abstract/10/11/1029 abstract]</ref>


==Squash around the world==
Squash now has a universal appeal, and there are courts in 154 countries in the world.<ref> World Squash Federation - The Squash Playing Nations and Total Squash Courts [http://www.worldsquash.org.uk/uploads/CourtNumbers.pdf]</ref>
According to the World Squash Federation, as of June 2009, there were 49,908 squash courts in the world, with 188 countries and territories having at least one court. England had the greatest number at 8,500. The other countries with more than 1,000 courts, in descending order by number were Germany, Egypt, the United States of America, Australia, South Africa, Canada, Malaysia, France, the Netherlands, and Spain. <ref> World Squash Federation - The Squash Playing Nations and Total Squash Courts [http://www.worldsquash.org.uk/wsf-courts.htm</ref>

As of June 2009, there were players from nineteen countries in the top fifty of the men's world rankings, with Egypt and England leading with eleven each. The women's world rankings featured players from sixteen countries, led by England with eleven.


==Players and records==
==Players and records==

Revision as of 21:18, 27 June 2009

Players in a glass-backed squash court
Squash racquet and ball
International squash singles court, as specified by the World Squash Federation

Squash is a racquet sport played by two players (or four players for doubles) in a four-walled court with a small, hollow rubber ball. Squash is recognized by the IOC and remains in contention for incorporation in a future Olympic program.

The game was formerly called squash racquets, a reference to the "squashable" soft ball used in the game (compared with the harder ball used in its parent game Racquets (or rackets; see below)).

History

Squash developed from at least five other sports involving racquets, gloves, and balls having roots in the early 1500s in France.[1] It's stated that “Squash, with its element of hitting balls against walls, was for entertainment. For example, boys and girls slapped balls in narrow alleys and streets”[1].

Religious institutions in France, such as monasteries, developed a similar game. Monks used gloves that were webbed to hit balls against a fishing net strung across the middle of the courtyards of the monasteries.[1] This developed the early “racquets” used in tennis and squash. Then in late fifteenth century, tennis was developed and spread to other European nations. The next major development of squash took place in England where the game of "racquets" was developed in Fleet Prison, a debtor’s prison.[1] Similar to tennis, it involved racquets and balls, but instead of hitting over a net as in tennis, players hit a non-squeezable ball against walls. A variation of rackets that also lead to the formation of squash was called fives, similar to handball. Fives was essentially the game of racquets, without racquets (the ball was hit with the hand),[1] played against a wall or walls.

These games gained popularity and were further developed in schools, notably Harrow School in England.[2] The first courts built at this school were rather dangerous because they were near water pipes, buttresses, chimneys, and ledges. The school soon built four outside courts. Natural rubber was material of choice for the ball. Students modified their racquets to have a smaller reach to play in these cramped conditions.[1] In the 1900s the game increased in popularity with various schools, clubs and even private citizens building squash courts, but with no set dimensions. In April 1907 the Tennis, Rackets & Fives Association set up a sub committee to set standards for squash. Then the sport soon formed, combining the three sports together called “Squash”. It was not until 1923 that the Royal Automobile Club hosted a meeting to further discuss the rules and regulations and another five years elapsed before the Squash Rackets Association was formed to set standards for squash in Great Britain.[1]

The sport spread to America and Canada, and eventually around the globe. Players such as F.D. Amr Bey of Egypt dominated the courts. Jahangir Khan of Pakistan won the British Open a record of ten times and Jansher Khan of Pakistan won the World Open a record of eight times.[2] Soon after this, many squash tournaments new associations formed by countries including European countries, United States, and Canada such as the World Squash Federation.

Court

The court size was codified in the 1920s at 9.75 m (32 ft) long and 6.4 m (21 ft) wide. The front wall has a "front wall line" 4.57 m (15 ft) above the floor, connected by a raking "front" line meeting the "out" line on the back wall at 2.13 m (7 ft) above the floor. The front wall also has a "service line" whose top is 1.83 m (6 ft) above the floor with the "tin" (made out of a special material, often metal, designed to make a distinctive sound when hit by a quickly moving ball) 48 cm (18.9 inches) high. The floor is marked with a transverse "half-court" line and further divided into two rear "quarter courts" and two "service boxes", as shown in the diagram above.

The traditional "American" court for the U.S. game, (now referred to as "hardball squash") is a similar size, but narrower at 18 feet 6 inches (5.64 m). The floor and wall markings differ slightly from the "International" court and the tin is lower, at 15 inches (38 cm) high. However, hardball squash was replaced by softball in America as the standard version of squash and has since almost completely died out.

A "Converted Court" is the result of converting racquetball courts to squash. Racquetball courts are 20 feet (6.1 m) wide and 40 feet (12.2 m) in length, so it is relatively easy to install a back wall, producing a squash court of 20 feet (6.1 m) wide by 32 feet (9.75 m) long.

Playing equipment

Standard rackets are governed by the rules of the game. Traditionally they were made of laminated timber (typically Ash), with a small strung area using natural gut strings. After a rule change in the mid-1980s, they are now almost always made of composite materials or metals (graphite, kevlar, titanium, boron) with synthetic strings. Modern rackets have maximum dimensions of 686 mm (27.0 in.) long and 215 mm (8.5 in.) wide, with a maximum strung area of 500 square centimetres (approx. 90 sq. in.), the permitted maximum weight is 255 grams (approx. 9 oz.), but most weigh between 110 and 200 grams (4-7 oz.).

Squash balls are 39.5 mm and 40.5 mm in diameter, and weigh between 23 and 25 grams.[3] They are made with two pieces of rubber compound, glued together to form a hollow sphere and buffed to a matte finish. Different balls are provided for varying temperature and atmospheric conditions and standards of play: more experienced players use slow balls that are smaller and have less bounce than those used by less experienced players (slower balls tend to die in court corners, rather than standing up to allow easier shots). Depending on its specific rubber composition, a squash ball has the property that it bounces more at higher temperatures. Small coloured dots on the ball indicate its dynamic level (bounciness), and thus the standard of play for which it is suited. The recognised speed colours indicating the degree of dynamism are:

A double yellow squash ball.
Colour Speed Bounce
Double Yellow Extra Super Slow Very Low
Yellow Super Slow Low
Green or White Slow Average
Red Medium High
Blue Fast Very High

Balls are manufactured to these standards by Prince, Dunlop, Pointfore, Wilson, Black Knight and others. The "double-yellow dot" ball, introduced in 2000, is currently the competition standard, replacing the earlier "yellow-dot" ball. There is also an "orange dot" ball, which is even less bouncy than the "double-yellow dot" ball, intended for use in areas of high altitude such as Mexico City, Calgary, Denver, and Johannesburg. The lower atmospheric pressure at these high altitude regions means that the ball bounces slightly higher, resulting in the need for such a ball.

Other balls available are:

  • Dunlop "Max Blue" (aimed at beginners), which is 12% larger and has 40% longer "hang time" than a "double-yellow dot ball" and has "instant bounce"
  • Dunlop "Max Progress" (red) (for players wishing to improve their technique), which is 6% larger with a 20% longer hang-time than a "double-yellow dot ball" and has instant bounce

Given the game's vigorousness, players wear comfortable sports clothing and robust indoor (non-marking) sports shoes. In competition, men usually wear shorts and a t-shirt or a polo shirt. Women normally wear a skirt and a t-shirt or a tank top, or a sports dress. Towelling wrist and head bands may also be required in humid climates. Polycarbonate lens goggles are recommended, as players might be struck with a fast-swinging racket or the ball, that typically reaches speeds exceeding 200 km/h (125 mph). In the 2004 Canary Wharf Squash Classic, John White was recorded driving balls at speeds over 270 km/h (170 mph). Many squash venues mandate the use of eye protection and some association rules require that all juniors and doubles players must wear eye protection.

Basic rules and gameplay

The court

The squash court is a playing surface surrounded by four walls. The court surface contains a front line separating the front and back of the court and a half court line, separating the left and right hand sides of the back portion of the court, creating three 'boxes' - the front half, the back left quarter and the back right quarter. Both the back two boxes contain smaller service boxes. All of the floor-markings on a squash court are only relevant during serves.

There are four walls to a squash court. The front wall, on which three parallel lines are marked, has the largest playing surface, whilst the back wall, which typically contains the entrance to the court, has the smallest. The out line runs along the top of the front wall, descending along the side walls to the back wall. There are no other markings on the side or back walls. Shots struck above the out line, on any wall, are out. The bottom line of the front wall marks the top of the 'tin', a half meter-high metal area which if struck means that the ball is out. The middle line of the front wall is the service line and is only relevant during serves.

Service

The players usually spin a racket to decide who commences serving at the start of the match. This player starts the first rally by electing to serve from either the left or right service box. For a legal serve, part of one of the server's feet must be in contact with the floor within the service box while not touching any part of the service box lines (the rest of that foot can reside over the line so long as it is not touching the ground) while striking the ball; after being struck by the racket, the ball must strike the front wall above the service line and below the out line and land in the opposite quarter court. The receiving player can choose to volley a serve after it has hit the front wall. If a server wins a point, the two players switch sides for the following point.

Play

After the serve, the players take turns hitting the ball against the front wall, above the tin and below the out line. The ball may strike the side or back walls at any time, as long as it hits below the out line. It must not hit the floor after hitting the racket and before hitting the front wall. A ball landing on either the out line or the line above the tin is considered to be out. After the ball hits the front wall, it is allowed to bounce once on the floor (and any number of times against the side or back walls) before a player must return it. Players may move anywhere around the court but accidental or deliberate obstruction of the other player's movements is forbidden. Players typically return to the center of the court after making a shot.

English scoring system

The scoring system is based on a “serving” system, in which one must gain the serve to obtain a point. Having the serve is sometimes considered to be on “offense”. The opponent (who does not have the serve) is considered to be on the defensive and must score to win the serve and then score again to gain a point.

Points are awarded if, during the course of play:

  • The receiver fails to strike the ball before it has bounced twice
  • The receiver hits the ball out (either on or above the out line, or on the tin)
  • The receiver fails to hit the front wall with the ball before the ball has bounced
  • Stroke: where the receiver obstructs the server during the point (see “Interference and Obstruction”)

Where the server does any of these things, or fails to hit the serve in, then the players change roles and the receiver will serve the next point, but no points are awarded.

Games are usually played to 9 points (alternatively, the receiver may opt to call "set two" and play to 10 when the score first reaches 8-8). Competition matches are usually played to "best-of-five" (i.e., the player to win the most out of 5 games). As the title suggests, this scoring system is preferred in Britain, but also among countries with traditional British ties, e.g. Australia, Pakistan, South Africa, India.

American scoring system

Alternatively, in the point-a-rally scoring system (PARS), points are scored by the winner of each rally, whether or not he or she served. Traditionally, PARS scoring was up to 15 points (or the receiver calls 15 or 17 when the game reaches 14-14). However, in 2004, the PARS scoring was reduced to 11 for the professional game (if the game reaches 10-10, a player must win by two clear points). PARS is now used on the men's Professional Tour, and the tin height has been lowered by two inches for the men's professional tournaments (these changes have been made in a hope to shorten the length of the rallies and therefore the match). The women's Professional Tour uses the original tin height, but started using the PARS to 11 scoring system as of July 2008. In the International game, club, doubles and recreational matches are usually played using the traditional British scoring system, but the European Squash Federation (ESF), World Squash Federation (WSF) and several national federations are now using PARS to 11 on a trial or permanent basis. Scoring systems and rules can be adapted subtly to accommodate shorter game time or multiple players.

Referee

The referee is usually a certified position issued by the club or assigned squash league. The referee has dominant power over the squash players. Any conflict or interference is dealt with by the referee. The referee may also issue to take away points or games due to improper etiquette regarding conduct or rules. Refer to “Interference and Obstruction” for more detail.

Types of shots played

There are many types of shots played that lead to interesting games and strategy.

1. Boast: Shots that are first played off the side or back walls

2. Volley: Shots that are played without having the ball touch the ground.

3. Drop Shot: Shots that are “tapped” lightly against the front wall to allow a silent and dead shot on the ground.

4. Lob: Shots that are struck softly, high on the front wall, with a high arc, the object being the placement of the ball into the back corners of the court.

5. Rail or Drive: Shots that are projected straight from the front wall towards the back wall. Usually these shots allow the ball to roll or “rail” against the sides of the side wall.

6. Cross Court: Shots that allow the ball to travel from one side of the court to the other side.

7. Kill: Shots that are hit firmly and travel no further than half court.

8. Trickle Boast: an attacking shot hit from the front of the court which is hit lightly so that the ball hits the side wall before the front wall and then the ground.

9. Squeeze Boast: A more difficult shot which is hit from the front of the court when the ball is very tight. Has the same effect as the trickle boast but is more deceptive because of its difficulty.

10. Skid Boast: Shot hit high with a lot of power so that the ball strikes the side wall before traveling cross court to the opposite corner.

11. Nick Shot: a more advanced shot that is a variation of the kill shot. Hit as a volley or off a bounce with power so that the ball travels into the nick between the side wall and floor in a way that forces the ball to have little or no bounce.

Strategy and tactics

A common strategy is to hit the ball straight up the side walls to the back corners referred to as a "rail," straight drive, wall, or "length", then move to the centre of the court near the "T" to be well placed to retrieve the opponent's return. Attacking with soft or "short" shots to the front corners (referred to as "drop shots") causes the opponent to cover more of the court and may result in an outright winner. "Angle" shots are used for deception and again to cause the opponent to cover more of the court.

A key strategy in squash is known as "dominating the T" (the intersection of the red lines near the centre of the court where the player is in the best position to retrieve the opponent's next shot). Skilled players will return a shot, and then move back toward the "T" before playing the next shot. From this position, the player can quickly access any part of the court to retrieve the opponent's next shot with a minimum of movement.

Rallies between experienced players may involve 30 or more shots and therefore a very high premium is placed on fitness, both aerobic and anaerobic. As players become more skilled and, in particular, better able to retrieve shots, points often become a war of attrition. At higher levels of the game, the fitter player has a major advantage.

Ability to change the direction of ball at the last instant is also important to off-balance the opponent. Expert players can anticipate the opponent's shot a few tenths of a second before the average player, giving them a chance to react sooner.

Interference and obstruction

Interference and obstruction are an inevitable aspect of this sport, since two players are confined within a shared space. Generally, the rules entitle players to a clear view of the ball after it has struck the front wall, reasonable access to the ball, a reasonable swing and an unobstructed shot to any part of the front wall. When interference occurs, a player may appeal for a "let" and the referee (or the players themselves if there is no official) then interprets the extent of the interference. The referee may elect to allow a let and the players then replay the point, or award a "stroke" (either a point or the right to serve) to the appealing player, depending on the degree of interference, whether the interfering player made an adequate effort to avoid interfering, and whether the player interfered with was likely to have hit a winning shot had the interference not occurred. An exception to all of this occurs when the interfering player is directly in the path of the other player's swing, effectively preventing the swing, in which case a stroke is always awarded.

When it is deemed that there has been little or no interference, the rules provide that no let is to be allowed, in the interests of continuity of play and the discouraging of spurious appeals for lets. Because of the subjectivity in interpreting the nature and magnitude of interference, the awarding (or withholding) of lets and strokes is often controversial.

When a player's shot hits their opponent prior to hitting the front wall, interference has occurred. If the ball was travelling towards the side wall when it hit the opponent, it is usually a let. However, it is a stroke to the player who hit the ball if the ball was travelling straight to the front wall when the ball hit the opponent. An exception to all of this occurs when the the player hitting the ball has "turned", i.e., let the ball pass him on one side, but then hit it on the other side as it came off the back wall. In these cases, the stroke goes to the player who was hit by the ball.

Cultural, social, and health aspects

There are several variations of squash played across the world. In the U.S. hardball singles and doubles are played with a much harder ball and different size courts (as noted above). Hardball singles has lost much of its popularity in North America (in favour of the International version), but the hardball doubles game is still active. There is also a doubles version of squash played with the standard ball, sometimes on a wider court, and a more tennis-like variation known as squash tennis.

The relatively small court and low-bouncing ball makes scoring points harder than in its American cousin, racquetball, as the ball may be played to all four corners of the court. Since every ball must strike the front wall above the tin (unlike racquetball), the ball cannot be easily "killed". As a result, rallies tend to be longer than in racquetball.

Squash provides an excellent cardiovascular workout. In one hour of squash, a player may expend approximately 600 to 1000 calories (3,000 to 4,000 kJ),[4] which is significantly more than most other sports and over 70% more than either general tennis or racquetball. The sport also provides a good upper and lower body workout by utilising both the legs to run around the court and the arms and torso to swing the racquet. In 2003, Forbes rated squash as the number one healthiest sport to play.[4] However, some studies have implicated squash as a cause of possible fatal cardiac arrhythmia and argued that squash is an inappropriate form of exercise for older men with heart disease.[5]

Squash around the world

According to the World Squash Federation, as of June 2009, there were 49,908 squash courts in the world, with 188 countries and territories having at least one court. England had the greatest number at 8,500. The other countries with more than 1,000 courts, in descending order by number were Germany, Egypt, the United States of America, Australia, South Africa, Canada, Malaysia, France, the Netherlands, and Spain. [6]

As of June 2009, there were players from nineteen countries in the top fifty of the men's world rankings, with Egypt and England leading with eleven each. The women's world rankings featured players from sixteen countries, led by England with eleven.

Players and records

The (British) Squash Rackets Association conducted its first British Open championship for men in December 1930, using a "challenge" system. Charles Read was designated champion in 1930, but was beaten in home and away matches by Don Butcher, who was then recorded as the champion for 1931. The championship continues to this day, but has been conducted with a "knockout" format since 1947.

Since its inception, the men's British Open has been dominated by relatively few players: F.D. Amr Bey (Egypt) in the 1930s; Mahmoud Karim (Egypt) 1940s; brothers Hashim Khan and Azam Khan (Pakistan) 1950s and 1960s; Jonah Barrington (Great Britain and Ireland) and Geoff Hunt (Australia) 1960s and 1970s; Jahangir Khan (Pakistan) 1980s; and Jansher Khan (Pakistan) 1990s.

The women's championship started in 1921, and has similarly been dominated by relatively few players: Joyce Cave and Nancy Cave (England) in the 1920s; Margot Lumb (England) 1930s; Janet Morgan (England) 1950s; Heather McKay (Australia) 1960s and 1970s; Vicki Cardwell (Australia) and Susan Devoy (New Zealand) 1980s; Michelle Martin (Australia) 1990s; and Sarah Fitz-Gerald (Australia) 1990s and 2000s.

Heather McKay, with her lengthy and absolute dominance of the game (she remained undefeated for 18 years during the 1960s and 1970s), is undoubtedly the greatest woman player of all time.

Because of its traditions, the British Open has been considered by many to be more prestigious than the World Open, which began in the mid-1970s. However, some have shown concern about the ability of the former to sustain its prominence, citing its failure in 2005 to attract top players, probably due in part to the disparity in prize money. In 2005 the combined men's and women's prize money for the British Open came to $71,000, compared with the 2005 World Open's prize money, estimated to be about $270,000.

Former world number one Peter Nicol has stated that he believes squash has a "very realistic chance" of being added to the list of Olympic sports for the 2016 Olympic Games.[7]

The current number 1 rank is held by Karim Darwish of Egypt in the men's competition.[8] and Nicol David of Malaysia in the women's competition.[9] Currently there is no international standard method (other than for professional players) for evaluating skill levels for players.

Wider acceptance

Squash players and associations have lobbied for many years for the sport to be accepted into the Olympic Games, with no success to date. Squash narrowly missed being instated for the 2012 London Games. It is again up for consideration for the 2016 Summer Games along with baseball, softball, rugby sevens, karate, golf, and roller sports. Up to two sports will be added to the Olympic programme which will be decided at the IOC assembly in October 2009. Currently there is a 28-sport ceiling and 26 sports are guaranteed to be included in the 2016 Summer Games.[10] Squash has kicked off their bid at the 2008 Hi-Tec World Championships with Jahangir Khan, President of the World Squash Federation, leading the way.[11]

Squash is played throughout the world, and is similar to tennis in skills and fitness requirements, but the principal limitation has always been the difficulty in observing the sport as a spectator, either in person or on television. The ball travels so quickly that television audiences are hard-pressed to follow the action, even though some tournaments have attempted to remedy the problem by using a specially coated ball for increased visibility. To maximize the viewing audience at tournaments, promoters often use an all-glass court that is designed to permit spectators to be seated around all four walls but is specially tinted so as not to distract the players. Because of these viewer restrictions, professional squash players earn vastly less than their counterparts in the tennis world.

Popular culture

The 1980 novel Boast by Miles Donald revolves around the game of squash.

In the TV sitcom "Frasier", squash was a game Frasier and his brother Niles would play.

In the movie Wall Street, Gordon Gekko (Michael Douglas) and Bud Fox (Charlie Sheen) play a game of squash.

In the television series "Friday Night Lights", Coach Eric Taylor and "Smash" Williams play a game of squash, which Smash describes as the "whitest sport ever".

In the Novel Digital Fortress by Dan Brown David Becker's hobby is playing squash.

In the 2005 novel Saturday by Ian McEwan, Henry Perowne plays a regular weekly squash game.

In the 1981 movie Outland, Marshal William T. O'Niel (played by Sean Connery) plays squash alone and against his female ally, Doctor Lazarus (Frances Sternhagen).

See also

Notes

  1. ^ a b c d e f g Zug, James. “The History of Squash”, "U.S. Squash", September 2003. 16 November 2008.
  2. ^ a b “History of Squash”, "Hi-Tec World Squash Championships Manchester 2008", 16 November 2008.
  3. ^ "Squash Balls". Squashplayer.co.uk. Retrieved 2009-06-03.
  4. ^ a b Santelmann, N. 2003. Ten Healthiest Sports - Forbes.com [1]
  5. ^ "Heart rate and metabolic response to competitive squash in veteran players: identification of risk factors for sudden cardiac death", European Heart Journal, Volume 10, Number 11, Pp. 1029-1035, abstract
  6. ^ World Squash Federation - The Squash Playing Nations and Total Squash Courts [http://www.worldsquash.org.uk/wsf-courts.htm
  7. ^ Squash 'deserves Olympic place', BBC article [2]
  8. ^ PSA current ranking, Official PSA site [3]
  9. ^ Wispa current ranking, Official Wispa site [4]
  10. ^ http://www.sportingnews.com/yourturn/viewtopic.php?t=426268
  11. ^ "Squash Launches Bid For Inclusion In 2016 Olympics". GamesBids.com. Retrieved 2009-06-03.

References

Further reading

  • Satterthwaite, Frank (1979). The three-wall nick and other angles : a squash autobiography. New York: Holt, Rinehart, and Winston. ISBN 0030166667.

External links