Riseball Overcoming Dropball Muscle Memory
Rick narrates a side by side motion analysis of Sarah's riseball and dropball release action. He points out the difficulty in delaying the arm pronation process so prevalent in the dropball. The natural design of the shoulder and elbow joints create a natural internal rotation of the upper arm and subsequently a pronation of the forearm.....so throwing a riseball is counter to the design of the arm.
(video length: 5 minutes and 20 seconds)