Learn the technique of swing bowling (Swing it like Pathan)
From the beginnig of cricket, bowling has since being the most skillful and difficult of cricket skills to acquire. It is a technique by which a person
(bowler) runs up to the wickets and throws the ball to the batsman, with a full arm, trying to hit the wicket to get the batsman out. There are many types of bowlers, from fast to slow, spin to swing.
Spinners are slow bowlers who manage to get the ball to change direction when hitting the ground. Swingers are those bowlers who manage to get the ball to move away or towards a batsman. Good bowlers can be terribly confusing because of the way they have perfected their bowling.
The essence of swing bowling is to get the cricket ball to deviate sideways as it moves through the air towards or away from the batsman. In order to do this, the bowler makes use of four factors:
The raised seam of the cricket ball
Asymmetry in the ball caused by uneven wear of its surface
The speed of the delivery
The bowler's action
The asymmetry of the ball is encouraged by the constant polishing of one side of the ball by members of the fielding team, while allowing the opposite side to deteriorate through wear and tear. Over time, this produces a marked difference in the aerodynamic properties of the two sides.
At speeds around 80 mph (around 130 km/h), the airflow around the ball is in transition between smooth, or laminar flow, and turbulent flow. At speeds of 90 mph (around 145 km/h) and above, all the flow is turbulent. A medium-pace bowler, working at 75 to 80 mph (around 120 to 130 km/h), takes advantage of this. In this critical region, the raised seam and other minor imperfections in the ball's surface can induce turbulence while air flowing over other parts of the ball remains laminar. Turbulent air separates from the surface of the ball later than laminar flow air, so that the separation point moves to the back of the ball on the turbulent side. On the laminar flow side it remains towards the front. The result is a net force in the direction of the turbulent side.
Thus by keeping the seam and roughness to one side, the bowler induces the ball to swing in that direction. Skilled bowlers can even make a ball swing one way, and then 'break' the other way upon bouncing, with an off cutter or leg cutter hand action.
The swing of a cricket ball is not caused by the Magnus effect, which gives rise to a force perpendicular to the axis of rotation (in this case up or down). The deviation of a swinging cricket ball is parallel to the axis of its rotation.
Inswing, Outswing and reverse swing.
Practise will make you perfect.
1.Align the seam to the right and place the roughened side of the ball on the right and towards leg slip, the ball will swing to the right. To a right-handed batsman, this results in the ball moving in to the leg side while in flight, usually inwards towards his body.
Outswinger:
2.Align the seam to the left towards the slips and place the roughened side of the ball on the left, the ball will swing to the left. To a right-handed batsman, this results in the ball moving away to the off side while in flight, usually outwards from his body.
The curvature of swing deliveries can make them difficult for a batsman to hit with his bat. Typically, bowlers more commonly bowl outswingers, as they tend to move away from the batsman, meaning he has to "chase" the ball in order to hit it. Hitting away from the batsman's body is dangerous, as it leaves a gap between the bat and body through which the ball may travel to hit the wicket. Also, if the batsman misjudges the amount of swing, he can hit the ball with an edge of the bat. An inside edge can ricochet on to the wicket, resulting in him being out bowled, while an outside edge can fly to the wicket-keeper or slip fielders for a catch.
An inswinger presents relatively fewer dangers to the batsman, but can result in bowled or leg before wicket dismissals if the batsman misjudges the swing on the ball.
An inswinger combined with a yorker can be especially difficult for the batsman to defend against, especially if used as a surprise delivery after a sequence of outswingers.
It is a common belief amongst both players and fans that balls swing more in humid weather conditions, although no objective research exists to bear this out. These days there is a distinct lack of left-arm swing bowlers in the game. Some of the more famous left-arm bowlers are Pakistan's Wasim Akram and Australia's Alan Davidson.
When the ball becomes very old-around 40 or more overs old, it can begin to swing towards the polished side rather than the rough side. This is known as reverse swing (Andrew Flintoff and Simon Jones have been known to produce reverse swing in balls as young as 15 overs old [3]). In essence, both sides have turbulent flow, but here the seam causes the airflow to separate earlier on one side. The result is always a swing to the side with the later separation, so the swing is away from the seam. (See External Links.)
Reverse swing is difficult to achieve consistently, as it relies on uneven wear of the ball, tends to occur mostly in hot, dry weather conditions, and requires bowling at high speed. Normal swing can be achieved at relatively moderate bowling speeds, but only the fastest bowlers can regularly produce reverse swing.
Reverse swing tends to be stronger than normal swing, and to occur late in the ball's trajectory. This gives it a very different character to normal swing, and because batsmen experience it less often they generally find it much more difficult to defend against. It is also possible for a ball to swing normally in its early flight, and then to reverse as it approaches the batsman, giving its trajectory an S-shape through the air.
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