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 Leg Spinner
The grip is two fingers up and two down, with the split 
between the second and third fingers, which are spread across the seam. 
The thumb rests on the ball and does not do anything. 
Shane says his grip is a little unusual because his first 
two fingers are closer than most leg-spinners.

The delivery - The spin on the ball is roughly 30 degrees 
so that the ball both spins sideways and dips with the overspin. 
Closest variation is the top-spinner, where the seam points to the
wicketkeeper and the ball over-spins straight down the pitch.

The delivery - The trick is to not bowl it too fast. 
When he stays relaxed and squeezes the ball out through 
fingers and thumb (an instant after the centre picture), 
the underspin makes the ball slice through the air more quickly.

The Site of the ICC Cricket World Cup 2007 and more....

The delivery - The front shoulder has to drop a little to 
allow the wrist to come right over the top and the ball to come 
out with the opposite spin on it - off-spin rather than leg-spin. 
At the last moment you have to flick the ball out of 
the off-spin way with your fingers.

The delivery - The ball is pushed out the front of the 
hand, from the palm, and either floats or skids through the air,
maybe swinging in a little. 
The seam is straight up and down and the zooter does not spin.
And a couple of illustrations of:

Pace Bowling - The Outswinger with Dennis Lillee
Tip for pace and rhythm

'If you are struggling to find a regular rhythm, try this exercise: 
to into an empty field with no obstacles nearby and from a marked point, 
do a full run-up with your eyes closed. Imagine you are an old steam 
engine looking to build momentum. Walk two or thre paces, 
start to jog and gradually build up to about three quarter speed, 
thinking of the sound and action of a steam train as you are running. 
I have used this method many many times, 
and it still works wonders in bringing out smoothness.' (1955)

'Befire you bowl your first ball, you must be mentally as well as physically set up. 
Making batsmen play is all important. 
If you bowl it at or just o
utside off stump, there is a genuine chance that he'll nick it, 
given that he's so keen to feel bat on ball.'

The outswinger delivered at pace is one of the most powerful deliveries. 
It swerves in the air from middle to off, begging for catches for the wicketkeeper or the slips.

Hold the ball well out of the palmwith the seam running vertically. 
At the point of delivery, the seam points towards first slip. 
The wrist is cocked and whipped through, with a powerful follow-up. 
The arm finishes well outside the body in the direction of mid-off.

The Grip:

The grip will vary according to the type of bowler, 
but the broad principle is that the ball should be held 
in the fingers and not in the hand. 
There is no hard and fast rule about bowling frips and it is up
to the bowler to find out what suits him best, 
but most swing bowlers will point the seam of the 
ball in the direction that they want it to swing to.

CRICKET: BALL LENGTHS

The ffg. are ball lengths which bowlers bowl at: