Movemement

Movement - As you are throwing the ball to your target, your dominant arm goes into abduction about to make the throw, your head is looking directly at the target, and your opposite leg of your throwing arm is coming forward towards the target.
Shoulder Girdle - Upward rotation with the Serratus anterior, Trapezius middle fibers and Trapezius lower fibers.
Shoulder Joint - The dominant shoulder is goint through diagonal abduction with the diagonal abductors.
Elbow Joint - While the non throwing hands elbow is in extension and the forearm in pronation using the pronator quadratus, the throwing arm is Flexed at 90 to 100 degrees using the long and short head of the biceps brachii, brachialis and brachioradialis.
Hip/Pelvic Girdle - With the movement being very similar to the prep phase, the hip/pelvic girdle uses slight more flexion and slight more rotation in the movement.  The muscles needed to carry out this movement are iliacus, psoas, rectus femoris, sartorius, pectineus adductor brevis and longus, adductor magnus and the gracilis.
Knee Joint - With the back knee being slightly flexed approximately 10 - 15
degrees and the front knee being flexed approximaltely 10 - 20 degrees, the two legs/knees work together to complete the throw using the biceps femoris, popliteus, semi-membranosus and semi-tendinosus.  There is also some internal and external rotation on both kness through the phase of this movement which uses biceps femoris, popliteus, semi-membranosus and semi-tendinosus.