Cricket is a bat-and-ball game played between two teams of eleven players each on a cricket field, at the centre of which is a rectangular 20-metre (22-yard) pitch with a target at each end called the wicket (a set of three wooden stumps upon which two bails sit). Each phase of play is called an innings, during which one team bats, attempting to score as many runs as possible, whilst their opponents bowl and field, attempting to minimise the number of runs scored. When each innings ends, the teams usually swap roles for the next innings (i.e. the team that previously batted will bowl/field, and vice versa). The teams each bat for one or two innings, depending on the type of match. The winning team is the one that scores the most runs, including any extras gained. The nature of the game allows for certain results when neither team wins; a draw where a timed match has been completed with the team batting last still batting, even though one team has at that point scored more runs; a tie where both teams have scored exactly the same number of runs when the team batting last has completed its innings; and a no result where little or no play has been possible because of climatic or other conditions (usually rain or bad light ending play before the allotted balls have been completed).
Before a match begins, the two team captains meet on the pitch for the toss (of a coin), with the winner deciding which team will bat first. Two players from the batting side, and all eleven players from the bowling/fielding side, then enter the field, and play proceeds by a member of the fielding team, known as the bowler, delivering (i.e., bowling) the ball from one end of the pitch towards the wicket at the other end, which is guarded by one of the batsmen, known as the striker. The striker's role is to strike the ball well enough to score runs, if possible, while not being dismissed. The other batsman, known as the non-striker, waits at the opposite end of the pitch near the bowler. The bowling team's objectives are to prevent the scoring of runs and to dismiss the batsman. A dismissed batsman, who is declared to be "out", must leave the field to be replaced by a teammate.
The most common forms of dismissal are these: bowled, when the bowler hits the stumps directly with the ball and dislodges the bail(s); leg before wicket (lbw), when the batsman prevents the ball from hitting the stumps with his body instead of his bat; and caught, when the batsman hits the ball into the air and it is intercepted by a fielder before touching the ground.
Runs are scored by two main methods: either by hitting the ball hard enough for it to cross the boundary, or by the two batsmen swapping ends by each simultaneously running the length of the pitch in opposite directions whilst the fielders are retrieving the ball.
Adjudication is performed on the field by two umpires, aided by a Third umpire and Match referee in international matches. They communicate with two off-field scorers (one per team) who record all the match's statistical information including runs, dismissals, overs, etc.
There are various formats ranging from Twenty20, played over a few hours with each team batting for a single innings of 20 overs (i.e. 120 deliveries), to Test matches, played over five days with unlimited overs and the teams each batting for two innings of unlimited length. Traditionally cricketers play in all-white kit, but in limited overs cricket they wear club or team colours. In addition to the basic kit, some players wear protective gear to prevent injury caused by the ball, which is a hard, solid spheroid made of compressed leather with a slightly raised sewn seam enclosing a cork core which is layered with tightly wound string.
Historically, cricket's origins are uncertain and the earliest definite reference is in south-east England in the middle of the 16th century. It spread globally with the expansion of the British Empire, leading to the first international matches in the second half of the 19th century. The game's governing body is the International Cricket Council (ICC), which has over 100 members, twelve of which are full members who play Test matches. The game's rules are held in a code called the Laws of Cricket which is owned and maintained by Marylebone Cricket Club (MCC) in London.
The sport is followed primarily in the Indian subcontinent, Australasia, the United Kingdom, Ireland, southern Africa and the West Indies. Women's cricket, which is organised and played separately, has also achieved international standard. The most successful side playing international cricket is Australia, having won seven One Day International trophies, including five World Cups, more than any other country, and having been the top-rated Test side more than any other country.
Types of match
Cricket is a multi-faceted sport with multiple formats that can effectively be divided into first-class cricket, limited overs cricket and, historically, single wicket cricket. The highest standard is Test cricket (always written with a capital "T") which is in effect the international version of first-class cricket and is restricted to teams representing the twelve countries that are full members of the ICC (see above). Although the term "Test match" was not coined until much later, Test cricket is deemed to have begun with two matches between Australia and England in the 1876–77 Australian season; since 1882, most Test series between England and Australia have been played for a trophy known as The Ashes. The term "first-class", in general usage, is applied to top-level domestic cricket. Test matches are played over five days and first-class over three to four days; in all of these matches, the teams are allotted two innings each and the draw is a valid result.
Limited overs cricket is always scheduled for completion in a single day. There are two types: List A which normally allows fifty overs per team; and Twenty20 in which the teams have twenty overs each. Both of the limited overs forms are played internationally as Limited Overs Internationals (LOI) and Twenty20 Internationals (T20I). List A was introduced in England in the 1963 season as a knockout cup contested by the first-class county clubs. In 1969, a national league competition was established. The concept was gradually introduced to the other leading cricket countries and the first limited overs international was played in 1971. In 1975, the first Cricket World Cup took place in England. Twenty20 is a new variant of limited overs itself with the purpose being to complete the match within about three hours, usually in an evening session. The first Twenty20 World Championship was held in 2007. Limited overs matches cannot be drawn, although a tie is possible and an unfinished match is a "no result".
Single wicket was popular in the 18th and 19th centuries and its matches generally qualify as important. In this form, although each team may have from one to six players, there is only one batsman in at a time and he must face every delivery bowled while his innings lasts. Single wicket has rarely been played since limited overs cricket began. Matches tended to have two innings per team like a full first-class one and they could end in a draw.
International competitions
Most international matches are played as parts of 'tours', when one nation travels to another for a number of weeks or months, and plays a number of matches of various sorts against the host nation. Sometimes a perpetual trophy is awarded to the winner of the Test series, the most famous of which is The Ashes.
The ICC also organises competitions that are for several countries at once, including the Cricket World Cup, ICC Champions Trophy and ICC World Twenty20. A league competition for Test matches played as part of normal tours, the ICC World Test Championship, has been proposed several times, and is currently planned to begin in 2019. The ICC maintains Test rankings, ODI rankings and T20 rankings systems for the countries which play these forms of cricket.
Competitions for member nations of the ICC with Associate status include the ICC Intercontinental Cup, for first-class cricket matches, and the World Cricket League for one-day matches, the final matches of which now also serve as the ICC World Cup Qualifier.
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