ChrisOLeary.com > Projects > Analyses > Joel Zumaya

Pitching Mechanics Analysis
Joel Zumaya

8/19/2008

Joel Zumaya has recently been having shoulder problems. The root cause of his problems is revealed in the video clip below.

Video Clip of Joel Zumaya

Joel Zumaya

What you see in Frame 32 is significant Hyperabduction, where Joel Zumaya's Pitching Arm Side (PAS) elbow gets both above and behind the level of his shoulders as in the two photos below.

Joel Zumaya

Joel Zumaya

Joel Zumaya

Joel Zumaya

This Inverted V arm action creates a significant timing problem (aka rushing) such that Joel Zumaya's shoulders start rotating well before his PAS forearm is vertical and in the high-cocked position.

about/a> | contact | copyright | sitemap | liability policy