The main aim of leg spin bowling is to deceive the batsman,
both in the air (by making the ball drift and drop quicker than would
normally be the case) and off the wicket (by making the ball turn
and bounce higher or lower than would normally be expected).
This is largely achieved by making the ball:
• spin very
quickly (ie high level of revolutions per minute)
the axis of rotation horizontal
• have a uniform direction
of spin along the seam of the ball
• have a combination
of ‘overspin’ and ‘sidespin’. Depending on
wind conditions and wicket conditions, a good rule-of-thumb is to
have an angle of spin, relative to its direction of travel of 45°.
How The Aggot™ works:
When bowling the The Aggot™, if spin is imparted on the ball
correctly, due to its physical shape, it will retain its disc shape
throughout its path in the air. Additionally, it will be clearly visible
what its angle of trajectory, rotation, direction of spin and axis
of rotation is.
The grip used on The Aggot™ should be exactly the same used
for a normal ball.
The orthodox grip is two fingers up and two down, with the split between
the second and third fingers, which are spread across the seam. The
top joints of the index and second fingers lie across the seam, the
third finger is bent and along the seam. The thumb rests on the ball
and does not do anything.
The Ideal Leg Break:
The “perfect” leg break could be considered to have the
following properties in the air:
||Very fast spin or revolutions on the ball.
||A uniform direction of spin around the seam of the ball.
||A combination of overspin (topspin) and sidespin so that not
only does the ball turn when it bounces off the wicket, but
it also drops in the air and bounces higher than would normally
be expected. A simple rule-of-thumb would be having the direction
of the spin at 45° (pointing to third man) as it travels
down the wicket.
||A vertical position as it travels down the wicket. This means
that the axis of rotation of the ball is horizontal resulting
in the fastest spinning part of the ball (which is around the
seam) hits the pitch first.
Please note, different wicket conditions, state of condition of the
ball, wind strength and direction may affect the “perfect”
leg break at a particular time.
The Aggot™ can be used in both skill-practicing drills and in
full, game-like practising situations. Some skill practising drills
would include kneeling on the ground and spinning the ball with an
underarm action in order to see the direction and stability of the
This can also be done with a partner by using an underarm action while
in the kneeling position. One could also underarm the ball to another
participant while standing, in order to practice the correct wrist
||To download this
coaching guide as a PDF file click the icon above.