As has been stated on this board, overuse injuries can occur over years of work. Some can pitch 4 games a day in travel ball and their injuries don't appear for a few years. Others are done by the time that they are 16. We could name numerous D1 teams, with their #1 pitcher, either out for the season or on a very limited pitch count.
The money making tournaments where girls play numerous games a day, are not very friendly to an athlete's arm.
The money making tournaments where girls play numerous games a day, are not very friendly to an athlete's arm.