Backhand: What you can learn from Wawrinka
Big radius, active left hand, long follow-through.
Stan Wawrinka's one-handed backhand thrives on a big swing radius and strong outward rotation of the forearm (supination). This creates lots of topspin while keeping the racket stable.
Summary by The Strong Baseline. Original article: Stan Wawrinka – Dominant one-handed backhand 3.0 by Dr. Martin G. Baroch on cpta-tennis.org.
Martin Baroch stresses the role of the left hand: it guides the racket in the backswing and initiates the movement. After contact, the racket stays high and under control.
Key point: On a one-handed backhand, your free hand is no passenger – it starts the stroke.