Despite being a carefully choreographed business, the WWE is an incredibly dangerous work environment for professional wrestlers.
In the ring, there is every chance for any number of things to go wrong, whether that is Seth Rollins' knee imploding after a sunset flip or Neville breaking his ankle on a simple baseball slide, even the easiest of moves have the potential to go wrong.
However, WWE stars never expect to get injured by a referee, which is exactly what happened to Sasha Banks last week.
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According to some reports that have been flying around after a recent WWE house show, Banks was injured during a six-woman tag match, not by an opponent but by the referee.
Apparently, Banks was going for a pin attempt when Lana - on the opposite team - stepped up onto the ring apron, distracting the referee's attention. When the referee turned back around to concentrate on the action, he accidentally kneed Banks in the head - who had moved from her original spot.
This wasn't just any knock to the head, though, as Sasha is reported to have suffered a very serious concussion and was in a bad way.
Respected wrestling journalist Dave Meltzer confirmed the news on his twitter account yesterday.
While this is clearly an accident, it could be bad for Banks who has already found her opportunities in the WWE severely limited since moving up from NXT.
Despite being arguably the most popular female star on the main roster right now, the WWE creative team have instead decided on cementing Charlotte as the big heel on the women's roster while giving Natalya and Becky Lynch the main event pushes as challengers.
One has to think that they are saving Banks to finally take the title off Charlotte at some point or another, to capitalise on her fanbase, but her injury history and most recent knock could worry the WWE, who are never keen to put belts on injury-prone stars.