Most viewers of Jon Rahm are mesmerized by what he does with his upper body, notably his short, oddly shaped swing that seems to have no depth in the backswing, an extremely bowed left wrist, and an exaggeratedly laid off shaft at the top. But in this video, I show that what allows all that to work is Rahm’s lower body technique, which is just about flawless. Rahm is a thick guy and taking the left arm across the chest would probably feel too tight, so it’s not surprising that he lets the hands travel away from his body in the takeaway and keeps his left arm well in front of his chest. He utilizes a very weak left-hand grip, so the bowed wrist simply keeps the club from getting overly open. His right upper arm and shoulder stay externally rotated in front of him so that when he drops his hands in transition and steepens the shaft (after a quite short period of flattening) it doesn’t get behind him. That’s all interesting stuff but the foundation of his swing is his nearly perfect lower body action. He adds flexion to the right hip while maintaining right knee flex and keeping his head out over the ball, and in the forward swing maintains the right hip on the tush line in transition while initiating the change of direction with the right-side pelvic rotator muscles. His left knee disappears at P5 (indicating nicely timed rotation) and when his hips square both sides of his butt are behind the box line. As he goes through impact his head stays out and his hips stay in the box until the end, which is something not everyone can do but what everyone should strive for.