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>>Heads can also hit each other or goalposts, for example when a keeper dives for the ball.

Aaaajajajajajajaja. Yes, lighting could also strike you.

It's more frequent than you think:

http://www.youtube.com/watch?v=NvSNMrcKR5Q

http://www.insideworldsoccer.com/2012/04/gerard-pique-injury...

Of course it happens. The same way that people get hit by lighting everyday, or that someone wins the lottery every day. But to pretend that in soccer you can get the same kind of dangerous injuries as in American Football is disingenuous.

Getting hit by lightning or winning the lottery happens orders of magnitude less often than getting a concussion in soccer. Don't be disingenuous.

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