Good points by CADad. According to Dr.Andrews and ASMI, throwing more than 80 mph doubles your risk of injury. Pitching more than 8 months a year raises your risk by 500%. Pitching while fatigued raises your risk by 3600% (not a typo).
Andrews wrote an article several years ago in which he was down on showcases. Not sure if it's still there, but it was on the USA Baseball site. He mentioned guys "throwing to the gun" as a concern. However, I haven't heard much from him on the issue in recent years. I suspect that he probably considers overuse a much greater danger.
Mark B is right about getting a contrast MRI of the elbow. (May not be worthwhile for the shoulder). They may make exceptions, but Andrews' group generally will not see you for an elbow injury unless you've had the contrast.
quote:
Originally posted by CADad:
Anybody stop to think that the kids who attend showcases tend to throw harder than the kids who don't? Anybody then stop to think that the kids who throw harder also tend to throw more innings during their seasons?
Higher velocities and more innings seems to be a lot stronger correlation than what is usually a pretty limited number of pitches at a showcase.
I don't think anyone has come anywhere close to showing that participating in showcases is a cause of arm injuries. On the other hand there are some pretty influential people making that leap who should know better.