In his starting posture from the ground up, he is evenly balanced over his feet across the foot arch, slightly bent in his knees, engaging the big muscles in the leg, calf, hamstrings and quadriceps. This then allows him to tilt slightly forward from the hips on top of his legs, maintaining an upright straight posture.
The line dissects up from the foot, into the knee, passing through his core muscles and up along the back of his shoulders. This shows he is balanced through the middle of his body allowing him to turn powerfully and maintain control of the clubhead as his arms swing.
Enjoy your golf
BRIAN MURPHY PGA PRO