All of the above. The ‘why’ is because of overuse from the repetitive motion of pitching (the act of pitching/throwing has been termed by some researchers as one of the most ‘violent’ acts in sports; as a long-time pitcher myself, I can attest to that statement). This is the primary reason why athletes of all kinds need to be proactive (rather than reactive) in performing a strength and conditioning routine specific to their sport before injury occurs.
Spot on. But explain deeper biomechanically!
Why can the UCL be injured?
Why is the Supraspinatus vulnerable?
Why the extensors?
Explain it biomechanically….
“Teaching The Science Behind The Movement”