OH.... Okay.... it's an exaggeration drill. I sometimes do exaggeration drills, because they will normally not exaggerate the move when they are doing full-motion pitching.
This is interesting to me, as my (few) pitching student tend to learn the riseball more easily than seems to be the case out there. I think it's been because I pushed the arm-whip action so much that sometimes the back of their hand IS facing their thigh as they go into their release. It's also due to my over-doing it on the palm up down the back side. Those Balswick clips helped me realize that the hand orientation isn't really palm up as much as we do after 9:00 (maybe 8:00).
