'Take a 100MPH fastball to the head or a line drive to the jaw and say that.'
Try it with a 100mph cricket ball, they are much harder than a baseball - it's like having a lump of oak bowled at you!
Try it with a Jai-Alai ball. The most lethal ball of any sport. I used to play this sport and the ball is harder than a golf ball. Rule Number #1 is never get hit with the ball. Rule Number #2 is never forget rule number #1! LOL! Here's more info...
http://www.fla-gaming.com/tools.htm