[Martee]

I like annikan skywalker rear view. To me that is easier to see what is what regarding moving and rotation.

Does Tiger set up with his shoulders open somewhat to the target line? I couldn't quickly find a picture if he did or not.

None the less I think it shows the head rotation effect.

The hip rotation/slide on the backstroke

And the leg action on down and follow through. Boy that left leg really raises the left shoulder, changes the axis tilt.

Thought it was interesting his head never gets back to the position (alignment/orientation) that the had at address till the ball is well away. The second frame is closer to the impact position than the first.