Hi Roger,
Yes youbcan definitely apply this same wrist movement to help against playing backspin balls too. In fact I would say it’s probably even more important in helping generate the extra spin and light touch on the ball required for these type of shots.
The wrist allows you to be more flexible in your shots in terms of direction and creating spin. It’s just important to remember not to have a wrist movement which is too big, this can result in inconsistent contact on the ball and a lack of control. So just accelerate the wrist through at the end of the shot just bofre and thorough the contact point for maximum effect!
