Step 2:

Begin to launch ball over your head towards your intended target

Shoulder Girdle - Both shoulders are abducting in upward rotation while contracting eccentrically.

Elbow - Both Elbows are flexion while the Biceps Brachii is contracting eccentrically and the Triceps Brachii are contracting concentrically but are slowly starting to begin eccentrically contracting.  The Anceous is contracting eccentrically.

Wrist - Both wrists, hands, fingers and thumbs are in flexion with the Flexor Digitorum superficialis with the flexor pollicis longus contracting concentrically as they are getting ready to release the ball away from their body.  Both wrists are eccentrically contracting their flexor carpi radialis