ALL three posts above are excellent, MRI's may not show the severity of the tear (or even a tear)but can give the doctor an inside view and compare his knowledge of what a healthy shoulder looks like in general, which might or might not lead him to think there is a tear. My sons friend said he had numerous contrast MRI's that showed nothing, yet exploratory surgery found a tear in the labrum. IMO, until the doctor goes into see what is actually there, how can he make a diagnosis as to your recovery time?
If it were my son, an 09 with no college commitment or not in the professional ranks, I would have a serious discussion about the possibility of continuing the game. It might sound like giving up, but surgery IS surgery and for pitchers, unless they have the best rehab available recovery is a slow process and is very difficult.
JMO.