The Logic Behind This Project

This project doesn't rest on an extremely complicated logical foundation. Instead, it rests on a series of what I think are a few fairly obvious observations.

1. Different Pitchers Have
     Different Pitching Mechanics
Not every pitcher pitches the same way; not every pitcher uses the same mechanics.

2. Not Every Pitcher Is Injured

3. Different Pitchers Experience
     Different injuries
Not every pitcher is injured, and not every pitcher who is injured experiences the same injury.

All of this suggests to me that there might be relationships (or patterns) between pitching mechanics and injuries. That then suggests that you might be able to reduce the risk that a pitcher will experience an injury by modifying their mechanics.