Graze

how hard one has to graze the ball and change the spin 

1. From topspin (TS) to backspin (BS)

2. From BS to TS. 

3. From side spin (SP) to BS

4. From SP to TS

5. From BS to SP

Thank you

Hi Ashok,

To reverse the spin say from BS to TS you need to brush quite fast to counteract the spin on the ball.

The faster you graze the ball the more effect your spin will have.  It is hard to quantify it.