Check delivery with a line down your trail wrist
Craig Hanson gives a checkpoint for delivery position using the trail (right) wrist. Draw a line down the back of the trail wrist: if it points outside the ball you are out of position, whereas on a professional the same line points in between the feet and the golf ball. He treats that line as a marker of a sound delivery position.
Channel: CraigHansonGolf
Watch official source at 5:00Why this context matters
Hanson contrasts the amateur and professional trail-wrist line.