The aim of cricket
Cricket is basically a simple game - score more than the opposition.
Two teams, both with 11 players, take it in turns to bat and bowl.
When one team is batting, they try and score as many runs as they can by hitting the ball around an oval field.
The other team must get them out by bowling the ball overarm at the stumps, which are at either end of a 22-yard area called a wicket.
The bowling team can get the batsmen out by hitting the stumps or catching the ball.
Once the batting team is all out, the teams swap over and they then become the bowling side.
Each time a team bats it is known as their innings. Teams can have one or two innings depending on how long there is to play.
The Ashes Test matches are over five days so England and Australia have two innings each to score as many runs as they can.
Whoever scores the most runs wins. But a cricket match can be drawn too.
That happens when the team bowling last fails to get all the batsmen out.
How runs are scored The fielding team have all 11 players on the field at the same time but there are only ever two batsmen.
Nine members of the fielding team can be positioned around the field depending on where the captain wants them.
The other two members of the team are the wicketkeeper and the bowler.
The bowler delivers the ball, overarm, at one of the batsmen who will try and hit the ball to score runs.
One run is scored each time the batsmen cross and reach the set of stumps at the other end of the pitch.
Four runs can be scored if the ball reaches the perimeter of the field or six runs if crosses the perimeter without bouncing.
Although all 11 players have the chance to bat, the team are "all out" when 10 wickets have fallen as the "not out" batsman is left without a team-mate at the other end of the wicket.
A team doesn't have to be all out for an innings to close.
If a captain feels their team has scored enough runs, they can bring the innings to a close by making a "declaration".
Teams also have a "12th man" who acts as a substitute fielder if one of the first 11 are injured.
However, the 12th man is not allowed to bat or bowl, except in one-day cricket.
Test Matches & One Day Cricket
International cricket is played in two different forms - Test matches and one-day games. Here are the key differences between the two.
The easiest way to tell Test and one-day cricket apart is by looking at the players. In Test cricket they always wear whites, whereas in the one-day game they wear colours.
The most important difference, however, is their respective lengths. Test cricket is played over five days, with each day's play lasting six hours and at least 90 overs bowled per-day.
One-day cricket - as its name suggests - is played on a single day and is restricted to a maximum number of overs.
Traditionally it lasts between 50 and 60 overs, however 20-over cricket has become more popular since the birth of the Twenty20 Cup.
In one-day cricket it's all about who can score the most runs in the same allotted amount of time.
Another key difference is that in the longer form each team has two turns to bat (called innings).
Each innings is over when either ten batsmen are out (all out), or the captain of the batting side declares the innings finished, for tactical reasons.
In one day cricket, on the other hand, the teams bat just once and an innings is over when either ten batsmen are out or all the overs have been bowled.
Byes & Leg Byes
If a legitimate ball passes the batsman without touching his bat or his body, any runs completed are credited as 'byes'.
If a legitimate ball misses the bat but touches the batsman's body, any runs completed are credited as 'leg byes'.
Runs completed off a bye or leg bye, including boundaries, are added to the extras tally of the batting team but they are not credited against the bowler.
In order for a leg bye to be awarded the umpire must deem that the batsman either attempted to play a stroke or tried to avoid being hit by the ball.
If the umpire considers that the batsman did neither of these then a dead ball is called and no runs can be scored.
Cricket Pitch Dimensions
The size of the field on which the game is played varies from ground to ground but the pitch alway stays the same.
It is a rectangular area of 22 yards (20.12m) in length and 10ft (3.05m) in width.
The popping (batting) crease is marked 1.22m in front of the stumps at either end, with the stumps set along the bowling crease.
The return creases are marked at right angles to the popping and bowling creases and are measured 1.32m either side of the middle stumps.
The two sets of wickets at opposite ends of the pitch stand 71.1cm high and three stumps measure 22.86 cm wide in total.
Made out of willow the stumps have two bails on top and the wicket is only broken if at least one bail is removed.
If the ball hits the wicket but without knocking a bail off, then the batsman is not out.
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By – Justin Kelly
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