Bat and ball

Bat and ball
=========

The essence of the sport is that a bowler delivers the ball from his end of the pitch towards the batsman who, armed with a bat is "on strike" at the other end.

The bat is made of wood and takes the shape of a blade topped by a cylindrical handle. The blade must not be more than 4.25 inches wide and the total length of the bat not more than 38 inches.

The bowler must employ an action in which the elbow does not straighten (within certain tolerance levels) to "bowl" the ball, which is a hard leather seamed spheroid projectile with a circumference limit of 9 inches.

The hardness of the ball, which can be delivered at speeds of more than 90mph, is a matter for concern and batsmen wear protective clothing including "pads" (designed to protect the knees and shins), "batting gloves" for the hands, a helmet for the head and a "box" inside the trousers (for the more delicate part of the anatomy). Some batsmen wear additional padding inside their shirts and trousers such as thigh pads, arm pads, rib protectors and shoulder pads.
==============================================================
Umpires and scorers
==================
The game on the field is regulated by two umpires, one of whom stands behind the wicket at the bowler's end, the other in a position called "square leg" which is several yards behind the batsman on strike. When the bowler delivers the ball, the umpire at the wicket is between the bowler and the non-striker. The umpires confer if there is doubt about playing conditions and can postpone the match by taking the players off the field if necessary: e.g., rain, deterioration of the light, crowd trouble.

Off the field and in televised matches, there is often a third umpire who can make decisions on certain incidents with the aid of video evidence. The third umpire is mandatory under the playing conditions for Test matches and limited overs internationals played between two ICC full members. These matches also have a match referee whose job is to ensure that play is within the Laws of cricket and the spirit of the game.

Off the field, the match details including runs and dismissals are recorded by two official scorers, one representing each team. The scorers are directed by the hand signals of an umpire. For example, the umpire raises a forefinger to signal that the batsman is out (has been dismissed); he raises both arms above his head if the batsman has hit the ball for six runs. The scorers are required by the Laws of cricket to record all runs scored, wickets taken and overs bowled. In practice they accumulate much additional data such as bowling analyses and run rates.

Unofficial scoring is carried on by spectators for their own benefit and by media scorers on behalf of broadcasters and newspapers.
===============================================================
Innings
======
In theory, all eleven members of the batting side take a turn to bat but an "innings" can end before they all do so. The innings (always used in the plural form) is the term used for the collective performance of the batting side. Each team has one or two innings each depending on the type of contest being played. The term innings also applies to a batsman's individual performance and it is often said that a batsman had an innings (meaning score) of so many runs.

The main aim of the bowler, supported by his fielders, is to dismiss the batsman. A batsman when dismissed is said to be "out" and that means he must leave the field of play and be replaced by the next batsman on his team. When ten batsmen have been dismissed (i.e., are out), then the whole team is dismissed and the innings is over. The last batsman, the one who has not been dismissed, is not allowed to continue alone as there must always be two batsmen "in". This batsman is termed "not out".

If an innings should end before ten batsmen have been dismissed, there are two "not out" batsmen. An innings can end early because the batting side's captain has chosen to "declare" the innings closed, which is a tactical decision; or because the batting side has achieved its target and won the game; or because the game has ended prematurely due to bad weather or running out of time. In limited overs cricket, there might be two batsmen still "in" when the last of the allotted overs has been bowled.
==============================================================
Overs
====
The bowler bowls the ball in sets of six deliveries (or "balls") and each set of six balls is called an over. This name came about because the umpire calls "Over!" when six balls have been bowled. At this point, another bowler is deployed at the other end and the fielding side changes ends. A bowler cannot bowl two successive overs, although a bowler can bowl unchanged at the same end for several overs. The batsmen do not change ends and so the one who was non-striker is now the striker and vice-versa. The umpires also change positions so that the one who was at square leg now stands behind the wicket at the non-striker's end and vice-versa.
==============================================================
Team structure

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 well-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 as most players focus on either batting or bowling skills.
===============================================================
Fielding

Fielding positions in cricket for a right-handed batsman


Main articles: Fielder and Fielding strategy (cricket)

All eleven players on the fielding side take the field together.

One of them is the wicket-keeper aka "keeper" who operates behind the wicket being defended by the batsman on strike. Wicket-keeping is normally a specialist occupation and his primary job is to gather deliveries that the batsman does not hit, so that the batsmen cannot run byes. He wears special gloves (he is the only fielder allowed to do so), and pads to cover his lower legs. Owing to his position directly behind the striker, the wicket-keeper has a good chance of getting a batsman out caught off a fine edge from the bat. He is the only player who can get a batsman out stumped.

Apart from the one currently bowling, the other nine fielders are tactically deployed by the team captain in chosen positions around the field. These positions are not fixed but they are known by specific and sometimes colourful names such as "slip", "third man", "silly mid on" and "long leg". There are always many unprotected areas.

The captain is the most important member of the fielding side as he determines all the tactics including who should bowl (and how); and he is responsible for "setting the field", though usually in consultation with the bowler.

In all forms of cricket, if a fielder gets injured or becomes ill during a match, a substitute is allowed to field instead of him. The substitute cannot bowl, act as a captain or keep wicket. The substitute leaves the field when the injured player is fit to return.
===============================================================
Bowling

Main articles: bowler (cricket), bowling (cricket), and bowling strategy (cricket)

The bowler reaches his delivery stride by means of a "run-up", although some bowlers with a very slow delivery take no more than a couple of steps before bowling. A fast bowler needs momentum and takes quite a long run-up, running very fast as he does so.

The fastest bowlers can deliver the ball at a speed of over 90mph and they sometimes rely on sheer speed to try and defeat the batsman, who is forced to react very quickly to a ball that reaches him in an instant.

Other fast bowlers rely on a mixture of speed and guile. Some fast bowlers make use of the seam of the ball so that it "curves" or "swings" in flight and this type of delivery can deceive a batsman into mistiming his shot so that the ball touches the edge of the bat and can then be "caught behind" by the wicketkeeper or a slip fielder.

A typical bowling action

At the other end of the bowling scale is the "spinner" who bowls at a relatively slow pace and relies entirely on guile to deceive the batsman. A spinner will often "buy his wicket" by "tossing one up" to lure the batsman into making an adventurous shot. The batsman has to be very wary of such deliveries as they are often "flighted" or spun so that the ball will not behave quite as he expects and he could be "trapped" into getting himself out.

In between the pacemen and the spinners are the "medium pacers" who rely on persistent accuracy to try and contain the rate of scoring and wear down the batsman's concentration.

All bowlers are classified according to their pace or style. The classifications, as with much cricket terminology, can be very confusing. Hence, a bowler could be classified as LF, meaning he is a left arm fast bowler; or as LBG, meaning he is a right arm spin bowler who bowls deliveries that are called a "leg break" and a "googly"!

During the bowling action the elbow may be held at any angle and may bend further, but may not straighten out. If the elbow straightens illegally then the square-leg umpire may call no-ball. The current laws allow a bowler to straighten his arm 15 degrees or less.
==============================================================