From Little League to big league, the weak spot is the arm.
D000293:Adolescent; D000328:Adult; D001265:Athletic Injuries / Q000453:epidemiology* / Q000517:prevention & control; D001484:Baseball; D002648:Child; D006801:Humans; D008297:Male; D000070599:Shoulder Injuries; D013177:Sports; D013178:Sports Medicine; D000092464:Elbow Injuries