Reciprocal motion? Lower resisting opening for the player to get across his body? Lots of words that don't describe what the picture clearly shows....
Clark's shoulders aligned to his pelvis at contact.View attachment 16838
what you are saying doesn’t mean that reciprocal rotation isn’t happening. The location of the pitch will determine how far the pelvis rotates. Here’s a better view look the hips are at about 70 degrees while the shoulders Keep going.
notice the back hip stop?
here it is again.