For a right handed player, left wrist position is the relationship of the back of the wrist and arm relative to the face of the club and swing plane. With a neutral grip, a flat wrist and arm that is parallel with the clubface at the top of the swing is square to the target. The idea is to retain this position at impact with the ball for an “on-plane” swing. A player’s ideal left wrist position will vary depending on their other pre and in-swing mechanics.
Coach Davie hendrix on the proper left wrist position
More on Swing Center:
Clay ballard on flattening the left wrist
drills to flatten left wrist with alistair davies golf
