Originally Posted by bhupaes
My point is that sidespin is not added intentionally. It is a byproduct of pulling the racquet inwards (and upwards, of course) just prior to contact. The actual amount and orientation of the resulting spin will depend on individual nuances like whether the player uses a straight arm or not, his grip, the height of the ball, and the contact point, among other things. All one can say, I believe, is "yes, there is likely to be sidespin, and lots of it."
Disagree. If I'm going for a shot and I don't want sidespin on it there will be no sidespin. If I want a lot of sidespin for some reason then there will be a lot of sidespin. If I want all sidespin and no topspin then that's what comes of my racquet. By intention. It's incorrect to say that some sidespin cannot be added by intention. Do you think Fed can't control the amount of sidespin on his shots?