Jack's Classic Swing
In his classic swing, Jack set up more on top of the ball, with his right leg angled inward. He said as he got older that his body was not able to make as strong a lateral move to the impact position. His chin is still slightly turned to his right, allowing him to make a bigger shoulder turn. Jack always wanted his chest and shoulders to react to the swinging of his arms and club during the transition. Note how he replanted his left heel toward the target, which kept his left hip from opening too soon.
The lower body slides toward the target, and the hips start to spin open. The head stays back, tilting the spine away from the target and leaving the swing's low point well behind the ball. The result of this move will be a fat shot or thin contact on the upswing.