At the age of 23 he fought for the title in PRIDE FC which had the best heavyweights at that time. He literally fought the best in the world and retired at the age of 30 in UFC. We will never see that kind of heavyweight in UFC at the age of 25 who will fight for the title today, i know that fighters were on steroids but come on! Heath Herring took the fights and was close to win some fights such as Fedor and Nogueira. I am impressed of him, the question is will Rizin try to pick him up in the near future?