I got a couple of front teeth knocked out during a football match when I was hit by a flying elbow.
I do still sit back and wonder when I'm in LA if this is all really true or is it all kid-on. But it's great. I always bear in mind that the right place and time have a huge deal to do with it, and there are hugely talented actors who haven't had that break.
I've come off horses and fought in medieval battles using axes, hammers and swords as well as fists. Getting your teeth knocked out is an occupational hazard.