Originally Posted by luvforty
wrist and racket does NOT stay in the same relationship.
pretty much. fed has wrist extension while it's above his shoulders. (cupped). most players don't do that. but as soon as he starts swinging his wrist goes immediately back to neutral and stays that way until after contact.
extending the wrist while above your head serves no purpose since contact is not made with an extended wrist and there is no wrist flexation in a slice so it's just a little quirk.