I don't know, if theirs a higher risk you can die being involved in MMA or boxing. for example take all the boxing and all the MMA matches that have taken place in the last century and a half (150 or so years) and you combine the deaths attributed to both sports, its still a very small percentage per sport, per matches that have taken place in the last 150 years.
So in essence you can conclude that you can die playing just about any sport, you can die from eating food, drinking water, you can get struck by lightning @ anytime, whether is raining or not.
You can die walking down the street, or riding your bike, you can die @ work, or even @ home by some freak tragic incident.
Weird shit can happen anywhere out of the blue. the fact is you can die from anything. :yesyes::2 cents::hatsoff: