Thanks for responding .... Update on original post:
After spending/wasting 3-4 weeks with "mis-diagnosis" of what ended up being a contusion (not a fracture or break) of the Hamate bone. My son had to miss 4 weeks of the summer-ball season keeping his wrist immobilized and allowing it to heal.
LESSONS LEARNED - If your player/son is exhibiting any wrist-pain on the pinky-side of the lead arm in his batting stance. Immediately have an MRI done to verify that it is/is not indeed a Hamate bone issue. If it is mis-diagnosed as "strained-ligaments/tendons" ... ice, anti-inflammatory drugs, and rest will make it feel better but will not heal a bone contusion/fracture. In fact, you will waste time going back and forth trying to play and then not-play as the issue persists. While I appreciated the 1st doctor's concern to not rush to have an expensive MRI done and my own desire to think that it was nothing ... as a "baseball-dad/family" we should have just did it immediately right up front to minimize my son's "down-time."
Be aware that after being laid-up for 4 weeks, my son experienced little nagging aches and pains (nothing significant, but certainly different for him) in different parts of his wrist and hand as he worked hard to get back into "game-shape" hitting wise. We also had to backoff his hitting-practice regimen in the 2-3 weeks after being laid-up but he did make a full recovery. Also of note, he had a bone-contusion NOT an actual fracture which I am told would have meant 6-7 weeks off. Recurring fractures might require surgery ... Yikes!!
Side Note - I used the 4-week break and the in-season sense of "urgency" to instill a hardcore speed and core workout regimen with my son which he normally would have strongly resisted in-season .... apparently it stuck, he still is doing it after the season wrapped up ... SWEET!!