I receive a lot of e-mails asking about drift or curve.
For a right arm leg spin bowler the drift he/she is seeking is in toward a right hand batter which tends to square the batter up and then ideally the ball will spin away toward slip after landing.
Shane Warne created havoc with batsmen because of the drift and spin he achieved.
How does it happen?
Genuine drift, which should not be confused with the ball angling in to the batter by a slicing action at release, comes from several basic areas.
1) side on alignment toward the target area.
2) revolutions on the ball (mostly side spin)
3) strong shoulder rotation (180 degrees)
Breeze over the left shoulder can also encourage the ball to drift in toward the batter.
If, as a couple of boys have told me, the ball is "drifting" toward slip it is most likely the shoulders are rotating around the front leg creating an angle of release in that direction.
For a ball to genuinely drift toward slip the revolutions on the ball would normally be the opposite of the leg break eg; Googly or off spin.
The more over spin (top spin) on the ball at release the more the ball will "drop" on the batter and the less it is likely to curve inwards.
As a rule chest on spinners struggle for drift.
So, improve your alignment and impart lots of spin on the ball and await the outcome.