Originally Posted by JohnYandell
Anything is possible. My opinion is that on the backhand the evolution or increase in closed stance has mirrored the evolution or increase of open stance on the forehand.
Why? In both cases the stance is allowing more turn--and hence more energy coiling and releasing.
In certain cases close stance (Djokovic) will work if the left leg would come along so that he finishes in open stance. If the left leg will not come along the right thigh will not clear and the stroke will be inhibited.
I still believe that it will be quite painful to go cross court with closed stance. In such situations open or semi-open will be better. For example, Djokovic uses variety of stances: open, semi-open, square, and close. I think stance is dictated by the hitting situation.