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Thursday, September 20, 2007

Cricket

Cricket is a bat-and-ball sport contested by two teams, usually of eleven players each. A cricket match is played on a grass field, roughly oval in shape, in the centre of which is a flat strip of ground 22 yards (20.12 m) long, called a cricket pitch. A wicket, usually made of wood, is placed at each end of the pitch.
The
bowler, a player from the fielding team, hurls a hard, fist-sized cricket ball from the vicinity of one wicket towards the other. The ball usually bounces once before reaching the batsman, a player from the opposing team. In defence of the wicket, the batsman plays the ball with a wooden cricket bat. Meanwhile, the other members of the bowler's team stand in various positions around the field as fielders, players who retrieve the ball in an effort to stop the batsman scoring, and if possible to get him or her out. The batsman - if he or she does not get out - may run between the wickets, exchanging ends with a second batsman (the "non-striker"), who has been waiting near the bowler's wicket. Each completed exchange of ends scores one run. Runs are also scored if the batsman hits the ball to the boundary of the playing area. The match is won by the team that scores more runs.
Cricket has been an established team sport for hundreds of years. It originated in its modern form in
England and is most popular in the present and former members of the Commonwealth. Cricket is the second most popular sport in the world.[1][2][3] More than a hundred cricket-playing nations are recognised by the International Cricket Council.[4] In the countries of South Asia, including India, Pakistan, Bangladesh and Sri Lanka, cricket is the most popular sport. It is also a major sport in England and Wales, Australia, New Zealand, South Africa, Zimbabwe and the English-speaking countries of the Caribbean, which are collectively known in cricketing parlance as the West Indies. There are also well-established amateur club competitions in countries as diverse as the Netherlands, Kenya, Nepal and Argentina, among others.
The sport is followed with passion in many different parts of the world. It has occasionally given rise to
diplomatic outrage, the most notorious incident being the Basil D'Oliveira affair which led to the banning of South Africa from sporting events. Other examples include the Bodyline series, played between England and Australia in the early 1930s, and the 1981 underarm bowling incident involving Australia and New Zealand.

The aim of the batting team is to score as many runs as possible. A run is scored when both batsmen successfully move to their respective opposite ends of the pitch. (The batsmen will usually only attempt to score runs after the striker has hit the ball, but this is not required by the rules—the batsmen can attempt runs at any time after the ball has been bowled.) Runs are also scored if the batsman hits the ball to the boundary of the playing area (this scores six runs if the ball crosses the boundary without having touched the ground, or four runs otherwise), or if the bowler commits some technical infringement like bowling the ball out of reach of the batsman.
The aim of the bowler's team is to get each batsman
out (this is called a "taking a wicket", or a "dismissal"). Dismissals are achieved in a variety of ways. The most direct way is for the bowler to bowl the ball so that the batsman misses it and it hits the stumps, dislodging a bail. While the batsmen are attempting a run, the fielders may dismiss either batsman by using the ball to knock the bails off the set of stumps to which the batsman is closest before he has grounded himself or his bat in the crease. Other ways for the fielding side to dismiss a batsman include catching the ball off the bat before it touches the ground, or having the batsman adjudged "leg before wicket" (abbreviated "L.B.W." or "lbw") if the ball strikes the batsman's body and would have gone on to hit the wicket. Once the batsmen are not attempting to score any more runs, the ball is "dead", and is bowled again (each attempt at bowling the ball is a "ball" or a "delivery").
The game is divided into
overs of six (legal) balls. At the end of an over another bowler from the fielding side bowls from the other end of the pitch. The two umpires also change positions between overs (the umpire previously at square-leg becomes the bowler's umpire at what is now the bowling end, and vice versa). The fielders also usually change positions.
Once out, a batsman is replaced by the next batsman in the team's line-up. (The batting side can reorder their line-up at any time, but no batsman may bat twice in one innings.) The
innings (singular) of the batting team ends when the tenth batsman is given out, leaving one batsman not out but without a partner. When this happens, the team is said to be "all out". (In limited overs cricket the innings ends either when the batting team is all out or a predetermined number of overs has been bowled.) At the end of an innings, the two teams exchange roles, and the side that has been fielding bats.
A team's score is reported in terms of the number of runs scored and the number of batsman that have been dismissed. For example, if five batsmen are out and the team has scored 224 runs, they are said to have scored 224 for the loss of 5 wickets (commonly shortened to "224 for five" and written 224/5 or, in Australia, "five for 224" and 5/224).
The team that has scored more runs at the end of the completed match wins. Different varieties of the game have different definitions of "completion"; for instance there may be restrictions on the number of overs, the number of innings, and the number of balls in each innings.

Results
Main article:
The result in cricket
If the team that bats last is all out before it has reached the total required to win, it is said to have "lost by n runs" (where n is the difference between the number of runs scored by the teams). If the team that bats last scores enough runs to win, it is said to have "won by n wickets", where n is the number of wickets left to fall. For instance a team that passes its opponents' score having only lost six wickets would have won "by four wickets".
In a two-innings-a-side match, one team's combined first and second innings total may be less than the other side's first innings total. The team with the greater score is then said to have won by an innings and n runs, and does not need to bat again: n is the difference between the two teams' aggregate scores.
If the team batting last is all out, and both sides have scored the same number of runs, then the match is a
tie; this result is quite rare in matches of two innings a side. In the traditional form of the game, if the time allotted for the match expires before either side can win, then the game is declared a draw.
If the match has only a single innings per side, then a maximum number of deliveries for each innings is often imposed. Such a match is called a "limited overs" or "one-day" match, and the side scoring more runs wins regardless of the number of wickets lost, so that a draw cannot occur. If this kind of match is temporarily interrupted by bad weather, then a complex mathematical formula, known as the
Duckworth-Lewis method after its developers, is often used to recalculate a new target score. A one-day match can also be declared a "no-result" if fewer than a previously agreed number of overs have been bowled by either team, in circumstances that make normal resumption of play impossible; for example, wet weather.

Laws of cricket
For more details on this topic, see
Laws of cricket.
The game is played in accordance with 42 laws, which have been developed by the
Marylebone Cricket Club in discussion with the main cricketing nations. Teams may agree before a game to introduce other rules or alter some of the existing rules. In particular, there are a number of modifications to rules dictating fielding positions for professional limited overs matches.

Players and officials

Players
For more details on this topic, see
Cricketer.
A team consists of eleven players. Depending on his or her primary skills, a player may be classified as a specialist
batsman or bowler. A balanced team usually has five or six specialist batsmen and four or five specialist bowlers. Teams nearly always include a specialist wicket-keeper because of the importance of this fielding position. Each team is headed by a captain, who is responsible for making tactical decisions such as determining the batting order, the placement of fielders and the rotation of bowlers.
A player who excels in both batting and bowling is known as an
all-rounder. One who excels as a batsman and wicket-keeper is known as a "wicket-keeper/batsman", sometimes regarded as a type of all-rounder. True all-rounders are rare; most players focus on either batting or bowling skills.

Umpires
For more details on this topic, see
Umpire (cricket).
Two on-field
umpires preside over a match. One umpire will stand behind the end of the pitch from which the ball is bowled, and adjudicate on most decisions. The other (the "square leg umpire") will stand near the fielding position called square leg, which offers a side view of the batsman, and assist on decisions for which he or she has a better view. In some professional matches the facility exists for them to refer some decisions to a third umpire, who has the assistance of television replays. In international matches an match referee ensures that play is within the laws of cricket and the spirit of the game. The third umpire and referee do not take the field during play.

Scorers
For more details on this topic, see
Scorer.
Two
scorers are appointed; usually, one is provided by each team. The laws of cricket specify that the official scorers are to record all runs scored, wickets taken and (where appropriate) overs bowled. They are to acknowledge signals from the umpires, and to check the accuracy of the score regularly both with each other and, at playing intervals, with the umpires. In practice scorers also keep track of other matters, such as bowlers' analyses, the rate at which the teams bowl their overs, and team statistics such as averages and records. In international and national cricket competitions, the media often require notification of records and statistics, so unofficial scorers often keep tally for broadcast commentators and newspaper journalists. The official scorers occasionally make mistakes, but unlike umpires' mistakes these can be corrected after the event.

The playing field
For more details on this topic, see
Cricket field.
The cricket field consists of a large, often
circular or oval-shaped, grassy ground. There are no fixed dimensions for the field but its diameter usually varies between 450 feet (137 metres) and 500 feet (150 metres). On most grounds, a rope marks the perimeter of the field and is known as the boundary.

The nature of the pitch
Pitches vary in consistency, and thus in the amount of bounce, spin, and seam movement available to the bowler. Hard pitches are usually good to bat on because of high but even bounce. Dry pitches tend to deteriorate for batting as cracks often appear, and when this happens spinners can play a major role. Damp pitches, or pitches covered in grass (termed "green" pitches), allow good fast bowlers to extract extra bounce and seam movement. Such pitches tend to offer help to fast bowlers throughout the match, but become better for batting as the game goes on.

Parts of the field
For some limited-over matches, there are two additional field markings. A painted oval is made by drawing a semicircle of 30 yards (27.4 m) radius from the centre of each wicket with respect to the breadth of the pitch and joining them with lines
parallel, 30 yards (27.4 m) to the length of the pitch. This line, commonly known as the "circle", divides the field into an infield and outfield. Two circles of radius 15 yards (13.7 m), centred on each wicket and often marked by dots, define the "close-infield". The infield, outfield, and the close-infield are used to enforce fielding restrictions.

Match structure
The toss
For more details on this topic, see
toss (cricket).
The two opposing captains
toss a coin before the match, and the captain who wins chooses either to bat or bowl first. The captain's decision is usually based on whether the team's bowlers are likely to gain immediate advantage from the pitch and weather conditions (these can vary significantly), or whether it is more likely that the pitch will deteriorate and make batting more difficult later in the game.

Overs
For more details on this topic, see
Over (cricket).
Each innings is divided into
overs, each consisting of six consecutive legal deliveries bowled by the same bowler. For the definition of illegal deliveries, see Extras. No bowler may bowl two consecutive overs, so at the end of the over the bowler must take up a fielding position and let another player bowl.
Overs are bowled from alternate ends of the pitch; at the end of each over the umpires swap, the umpire at the bowler's end moving to square leg, and the umpire at square leg moving to the new bowler's end. The fielders also usually change positions.

End of an innings
For more details on this topic, see
End of an innings (cricket).
An innings is completed if:
Ten out of eleven batsmen are out (dismissed); the team are said to be "all out".
The team has only one batsman left who can bat, one or more of the remaining players being incapacitated either through injury, illness or absence; again, the team are said to be "all out".
The team batting last reaches the score required to win the match.
The predetermined number of overs has been bowled (in a one-day match only, usually 50 overs).
A captain
declares his team's innings closed (this does not apply to one-day limited over matches).

Playing time
For more details on this topic, see
Playing time (cricket).
Typically, two-innings matches are played over three to five days with at least six hours of cricket played each day. One-innings matches are usually played in one day, and often last six hours or more. There are usually formal intervals on each day for lunch and tea, and brief informal breaks for drinks. There is also a short interval between innings.
The game is usually only played in dry weather; play is also usually stopped if it becomes too dark for the batsmen to be able to see the ball safely. Some one-day games are now played under floodlights but, apart from a few experimental games in Australia, floodlights are not used in longer games. Professional cricket is usually played outdoors. These requirements mean that in England, Australia, New Zealand, South Africa and Zimbabwe the game is usually restricted to the summer. In the West Indies, India, Pakistan, Sri Lanka and Bangladesh games are played in the winter. These countries'
hurricane and monsoon seasons coincide with their summer.
Dismissal of a batsman
For more details on this topic, see
Dismissal (cricket).
There are ten ways in which a batsman may be dismissed. Once a batsman is dismissed, he leaves the field to be replaced by another batsman. When the tenth batsmen is out, and only one batsman remains undismissed, the side is "all out" and the innings is over.
Many modes of dismissal require the wicket to be "put down". The wicket is put down if a bail is dislodged from the top of the stumps; or if a stump is struck out of the ground either by the ball or by a fielder using the hand in which the ball is being held. Of the following ten modes of dismissal, the first six are common, while the last four are technicalities that rarely occur. The ten modes are:
Caught — When a fielder catches the ball before it bounces and after the batsman has struck it with the bat or it has come into contact with the batsman's glove while it is in contact with the bat handle. The bowler and catcher are both credited with the dismissal. (Law 32)
Bowled — When a delivered ball hits the stumps at the batsman's end, and dislodges one or both of the bails. This happens regardless of whether the batsman has edged the ball onto the stumps or not. The bowler is credited with the dismissal. (Law 30)
Leg before wicket (lbw) — When a delivered ball misses the bat and strikes the batsman's leg, pad or body, and the umpire judges that the ball would otherwise have struck the stumps. The laws of cricket stipulate certain exceptions. For instance, a delivery pitching outside the line of leg stump should not result in an lbw dismissal, while a delivery hitting the batsman outside the line of the off stump should result in an lbw dismissal only if the batsman makes no attempt to play the ball with the bat. The bowler is credited with the dismissal.
Run out — When a fielder, bowler or wicket-keeper removes one or both of the bails with the ball by hitting the stumps whilst a batsman is still running between the two ends. The ball can either hit the stumps directly or the fielder's hand with the ball inside it can be used to dislodge the bails. Such a dismissal is not officially credited to any player, although the identities of the fielder or fielders involved are often noted in brackets on the scorecard.
Stumped — When the batsman leaves his crease in playing a delivery, voluntarily or involuntarily, but the ball goes to the wicket-keeper who uses it to remove one or both of the bails through hitting the bail(s) or the wicket before the batsman has remade his ground. The bowler and wicket-keeper are both credited. This generally requires the keeper to be standing within arm's length of the wicket, which is done mainly to spin bowling. (Law 39)
Hit wicket — When the batsman accidentally knocks the stumps with either the body or the bat, causing one or both of the bails to be dislodged, either in playing a shot or in taking off for the first run. The bowler is credited with the dismissal. (Law 35)
Handled the ball — When the batsman deliberately handles the ball without the permission of the fielding team. No player is credited with the dismissal. (Law 33)
Hit the ball twice — When the batsman deliberately strikes the ball a second time, except for the sole purpose of guarding his wicket. No player is credited with the dismissal. (Law 34)
Obstructing the field — When a batsman deliberately hinders a fielder attempting to field the ball. No player is credited with the dismissal. (Law 37)
Timed out — When a new batsman takes more than three minutes to take his position in the field to replace a dismissed batsman (If the delay is protracted, the umpires may cause the match to be forfeited). This rule prevents the batting team using time limits of the game to unfair advantage. No player is credited with the dismissal. (Law 31)
Additionally, a batsman may leave the field without being dismissed. For instance, if he is injured or taken ill, this is known as
retired hurt or retired ill. The batsman is not out; he may return to bat later in the same innings if sufficiently recovered. Also, an unimpaired batsman may retire, in which case he is treated as being dismissed retired out; no player is credited with the dismissal.
Batsmen cannot be out bowled, caught, leg before wicket, stumped or hit wicket off a no ball. They cannot be out bowled, caught, leg before wicket, or hit the ball twice off a wide.
Some of these modes of dismissal can occur without the bowler bowling a delivery. The batsman who is not on strike may be
run out by the bowler if he leaves his crease before the bowler bowls, and a batsman can be out obstructing the field or retired out at any time. Timed out is, by its nature, a dismissal without a delivery. With all other modes of dismissal, only one batsman can be dismissed per ball bowled.