i was a sr pitcher last year and i know the feeling of not wanting to come off the mound knowing that i might never walk back on the mound ever again. but you have to be logical. it is a sport that i loved, but it is a sport. i have the rest of my life ahead of me, and there is no need to risk an injury that i will have to deal with for the rest of my life. every pitcher knows their own arm better than anyone else, but you have to be smart. no kid is ever going to ask to come out. by the time you reach about 90 or so pitches, your arm is kind of numb. you won't feel the pain or consequences of that many pitches til the next day. there is a fine line of pushing yourself to get the most out of you or going overboard of risking injury. the coach needs to take care of his players.