Racquetball Roughness

Today I got hit in the head playing Racquetball, twice. Anybody who's played Racquetball knows how much that can hurt, especially the direct hits which haven't had any chance to lose their kinetic energy by bouncing off any walls. Add to that freezing cold temperatures from playing outside, and that little rubber ball becomes quite the projectile. Luckily I was facing away from the incoming projectile and was thus only knocked up the side and back of the head.