What it is:  | When the pitcher rotates their front side (shoulder/hip) too early before foot plant.  | 
Why it matters:  | Causes loss of velocity and control; ball often sails arm-side and up.  | 
Good mechanics in this phase look like:  | 
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How to address it:  | 
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Flying Open (Pitching)
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Written by Matthew Kowalski
 Updated over a month ago