I had a similar experience. I rode the pine for several years, had two good years when I was 11 and 12 years old (after a coach worked one on one with me on my hitting), then pretty much stunk for the remainder of my baseball career. I don’t have a medical excuse, however. Where I played, the 13-17 year olds were all grouped together in one league. As a 13 year old, I got beaned in the head by a 17 year old throwing about 200 miles per hour and was never able to hang in the box afterward (Obviously I exaggerate about how hard he threw, but it seemed that bad to my freshly beaned 13 year old self :) )
that could put the fear of God in you and change your playing abilities for good. I bet it happens to prow too.
Happened to me but not that hard but still moved back an swung blindly for about a year