when i was in high school, one day in gym class we were playing baseball. This kid was pitching and got nailed very very hard in the nuts with a line drive. dropped like a stone rolled arroun for a few min, and when he got up he had blood all over his pants then he started screaming, he had burst a testical. he returned to class 4 days later. but hey thats why we got 2 of them, incase somthing happens to one.