When I was 11 or 12 years old, I got to baseball practice a little early and my coach and his son were the only ones there. His son was a pitcher and I liked to hit, so we had a little pre-practice batting practice with his dad shagging balls in left field (I was a dead pull hitter). A handful of whacks into the practice, I rocketed a ball back up the middle and right of the son's knee. The ball hit of his knee and bounced clear into the outfield. No terrible harm done or broken bones, but the poor kid sure didn't want to pitch to me any longer and not long after, gave up the pitching gig all together. Moved into the outfield. But not a total loss for him though as he turned out to be a pretty good outfielder by the name of Jose Canseco.