Photo Study of Novak Djokovic's Strokes

Djokovic demonstrates a fairly standard two-handed backhand preparation here. His stance is basically square (parallel to the sideline), with his weight transferring onto his front leg. The tip of his racquet points at the back fence. His wrists are laid back slightly to enhance the forward whip of the racquet when he swings. The one element that's slightly unusual is the slight upward tilt in his stringbed at this point in the backswing. If he's about to lob, this racquet angle on the backswing will work. If not, he'll have to turn his wrists, either while still in the backswing or during the swing, to avoid an upward tilt at contact. Many players get good at subtly turning their wrists just the right amount during the swing to create a vertical string bed at contact, but it's a lot easier just to start with a racquet angle on the backswing that results in a vertical string bed on contact without having to turn the wrists.