Just looking at the 2 pictures above me, this sports is really brutal. At least in Boxing and MMA, they used gloves to protect the athletes from further injuries but with this sports, their face is all messed up. I think that Bare Knuckle fights should have more strict regulation.
Strict regulation? Regulations don't work when you fight without the gloves. Just check this video:
https://www.youtube.com/watch?v=kyjM3fEDvdoAt around 0:19, you can see Jason Knight losing one of his tooth. After watching the one minute video, I felt like I had watched some Hollywood horror movie. This one is not for civilized people.