Originally Posted by Chas Tennis
This high speed video is for a more overhead throw as from an outfielder throwing to home plate. Ignore footwork. First video only.
Is this motion related to the upward throwing motion sought for the throw-serve drill?
Yes, there are very strong similarities in that throwing motion and serving. The thrower even appears to be in the infamous trophy pose at one point with arms apart, shoulders tilted upward and chest muscles stretched. Then he uses core/hip/shoulder rotation to whip the arm through.