Back in the olden days it was savagery back then because there is too much blood pour in the ring and they are fighting to the death, but now we are in a modern era, it's now based on science and arts, boxing and other contact sports now are more regulated, before you get into the ring you have to fit and in the best of health and undergone a lot of physical examination, and we have a referee to stop the fight anytime and check for any hard blows and conditions of both fighters and of course we have doctors to oversee the general condition of both fighters.
Those were the gladiator days.
And their strength is measured until how long they can endure death and the one who die first is the weaker ones. Well, we're no longer living in that era and what you've said about its differences between there and now istrue.
There's a long examination that one should pass before stepping on the ring.