Originally Posted by luvforty
side spin means you are doing it right.... the path is basically a mirror image of the FH, up and across.
it feels more like cutting the ball with the leading edge, than hitting thru the ball with the strings..... cutting allows you to swing aggressive, more spin, more bite and control.
the forearm deviation? not sure what you mean..... it's supination of the forearm, again, mirror image of the pronation on the FH...... look at henin or fed or any pros today, at the end of the follow thru, the tip of the racket points to the backfence, which means forearm rolling clockwise (supination)... this is a big contributor of spin
What I mean is the sort of deviation of my forearm towards the right sideline (for a right-hander) so the racquet face can meet the ball at a proper angle