I don't recall anyone falling out of a cage either. Ring yeah, cage no. I've seen people try and throw people out of the cage lol. But never anyone falling through the door in the middle of a fight. Not that I can remember at least. I can't wait to see this thing.
it happened at one of the first UFCs (i think 3, maybe?) and at least once in king of the cage. it's never happened where one (or both) of the fighters got injured, but fighters have crashed through the cage doors before.