A cricket match is played between two teams of eleven players each on a grassy field, typically 137–150 metres (150–160 yd) in diameter. The Laws of Cricket do not specify the size or shape of the field but it is often oval.
A cricket match is divided into periods called innings. During an innings (innings ends with 's' in both singular and plural form), one team fields and the other bats. The two teams switch between fielding and batting after each innings. All eleven members of the fielding team take the field, but only two members of the batting team (two batsmen) are on the field at any given time.
The key action takes place in the pitch, a rectangular strip in the centre of the field. The two batsmen face each other at opposite ends of the pitch, each behind a line on the pitch known as a crease. The fielding team's eleven members stand outside the pitch, spread out across the field.
Behind each batsman is a target called a wicket. One designated member of the fielding team, called the bowler, is given a ball, and attempts to send (bowl) the ball from one end of the pitch to the wicket behind the batsman on the other side of the pitch. The batsman tries to prevent the ball from hitting the wicket by striking the ball with a bat. If the bowler succeeds in hitting the wicket, or if the ball, after being struck by the batsman, is caught by the fielding team before it touches the ground, the batsman is dismissed. A dismissed batsman must leave the field, to be replaced by another batsman from the batting team.
If the batsman is successful in striking the ball and the ball is not caught before it hits the ground, the two batsmen may then try to score points (runs) for their team by running across the pitch, grounding their bats behind each other's crease. Each crossing and grounding by both batsmen is worth one run. The batsmen may attempt multiple runs or elect not to run at all. By attempting runs, the batsmen risk dismissal, which can happen if the fielding team retrieves the ball and hits a wicket with the ball before either batsman reaches the opposite crease.
If the batsman hits the bowled ball over the field boundary without the ball touching the field, the batting team scores six runs and may not attempt more. If the ball touches the ground and then reaches the boundary, the batting team scores four runs and may not attempt more. When the batsmen have finished attempting their runs, the ball is returned to the bowler to be bowled again. The bowler continues to bowl toward the same wicket, regardless of any switch of the batsmen's positions.
After a bowler has bowled six times (an over), another member of the fielding team is designated as the new bowler. The new bowler bowls to the opposite wicket, and play continues. Fielding team members may bowl multiple times during an innings, but may not bowl two overs in succession.
The innings is complete when 10 of the 11 members of the batting team have been dismissed, one always remaining "not out", or when a set number of overs has been played. The number of innings and the number of overs per innings vary depending on the match.
Objectives
The objective of each team is to score more runs than the other team and to completely dismiss the other team. In limited overs cricket, winning the game is achieved by scoring the most runs within the overs allowed, even if the opposition has not been completely dismissed. In Test cricket, it is necessary to score the most runs and dismiss the opposition twice in order to win the match, which would otherwise be drawn.
At either end of the pitch, 22 yards (20 m) apart, are placed the wickets. These serve as a target for the bowling (aka fielding) side and are defended by the batting side which seeks to accumulate runs. The pitch is 22 yards (20 m) or one chain in length between the wickets and is 10 feet (3.0 m) wide. It is a flat surface and has very short grass that tends to be worn away as the game progresses. The "condition" of the pitch has a significant bearing on the match and team tactics are always determined with the state of the pitch, both current and anticipated, as a deciding factor.
Each wicket consists of three wooden stumps placed in a straight line and surmounted by two wooden crosspieces called bails; the total height of the wicket including bails is 28.5 inches (720 mm) and the combined width of the three stumps is 9 inches (230 mm)
Four lines, known as creases, are painted onto the pitch around the wicket areas to define the batsman's "safe territory" and to determine the limit of the bowler's approach. These are called the "popping" (or batting) crease, the bowling crease and two "return" creases.
A wicket consists of three stumps that are hammered into the ground, and topped with two bails.
The stumps are placed in line on the bowling creases and so these must be 22 yards (20 m) apart. A bowling crease is 8 feet 8 inches (2.64 m) long with the middle stump placed dead centre. The popping crease has the same length, is parallel to the bowling crease and is 4 feet (1.2 m) in front of the wicket. The return creases are perpendicular to the other two; they are adjoined to the ends of the popping crease and are drawn through the ends of the bowling crease to a length of at least 8 feet (2.4 m).
When bowling the ball, the bowler's back foot in his "delivery stride" must land within the two return creases while his front foot must land on or behind the popping crease. If the bowler breaks this rule, the umpire calls "No ball".
The importance of the popping crease to the batsman is that it marks the limit of his safe territory for he can be stumped or run out (see Dismissals below) if the wicket is broken while he is "out of his ground".
