The elbow is far ahead of the rest of the arm which makes it look like a dragging motion - this puts severe strain on the elbow and shoulder. In this throw, the arm is usually wrapped around the head and on the forward motion it is brought around the side of the body. Commonly used by catchers, only the arm is used - this throw also puts alot of strain on the elbow, and shoulder.
Players learn by seeing hearing and feeling.
It is even more difficult for them to develop muscle memory for that action. The ThrowMAX is the world's only flexible arm brace made of extremely lightweight material that fits directly on a ballplayers arm. There are 2 Velcro straps to hold the brace on and 3 flexible polycarbonate bars that supply resistance which provides instant feedback as to the correct and incorrect motion of a player's throwing motion. The brace has a player immediately recognize if they try to shortcut an overhand throw. With the ThrowMAX, as soon as a players begins to drop their arm, they feel increasing pressure which tells the body to raise the arm up.