The Toss
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.
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 takes up a fielding position and another player bowls.
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 Innings
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 unavailable owing to injury, illness or absence; again, the team is 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, most commonly 50 overs).
- A captain declares his team's innings closed (this does not apply in one-day limited over matches).
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.
The batsman may play a "shot" or "stroke", attempting to hit the bowled ball with the flat surface of the bat. If the ball brushes the side of the bat it is called an "edge". There is no requirement for the batsman to play a shot, and there is no requirement to run if the ball is struck. The batsman automatically scores runs if he hits the ball to the boundary. Shots are named according to the style of swing and the direction aimed. As part of the team's strategy, the player may bat defensively, blocking the ball downwards, or aggressively, hitting the ball hard to empty spaces in order to score runs.
Batsmen come in to bat in a batting order, decided by the team captain. The first two batsmen - the "openers" - usually face the most hostile bowling, from fresh fast bowlers with a new ball. The top batting positions are usually given to the most competent batsmen in the team, and the non-batsmen typically bat last. The batting order is not agreed beforehand, and if a wicket falls any player who has not batted yet may bat next.
To score a run, a striker must run to the opposite end of the pitch, while his non-striking partner runs to his end. To register a run, both runners must touch the ground behind the crease with either their bats or their bodies (the batsmen carry their bats as they run). If the striker hits the ball well enough, the batsmen may double back to score two or more runs. However, no rule requires the batsman to run upon striking the ball. The decision to attempt a run is ideally made by the batsman who has the better view of the ball's position, and this is communicated by calling: "yes", "no" and "wait" are often heard. The batsmen swap ends every time an odd number of runs are scored.
If a fielder knocks the bails off the stumps with the ball while no part of the batsman is grounded behind the popping crease, the batsman nearer the broken wicket is run out. The batsman may ground the bat, provided he or she is holding it.
If the ball reaches the boundary, then runs are automatically scored: six if the ball goes over the boundary without touching the ground, four if it touched the ground. These are scored instead of any runs the batsmen may have already run (unless they have run more, which is unlikely), and they return to the ends at which they started.
Bowling
A bowler delivers the ball toward the batsmen: 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.
The bowler's primary goal is usually to get the batsman out; the most common modes of dismissal (except run out) are credited to the bowler, who is said to have taken a wicket. Dismissing an accomplished batsman is more difficult than dismissing a non-batsman. The bowler's secondary task is usually to limit the numbers of runs scored. Occasionally the match situation makes it more important to limit runs than take wickets.
There are many types of bowler, and many nuances of bowling techniques. Two categories are pace bowlers, who aim to bowl quicker than the batsman's reaction speed, and spin bowlers who bowl slower deliveries that bounce and curve in unpredictable ways.
Extras
Every run scored by the batsmen contributes to the team's total. A team's total also includes a number of runs which are unaccredited to any batsmen. These runs are known as extras; in Australia they are also called "sundries".
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