He's a great fighter, easily the best heavyweight, yet most people have never heard of him. The American and Canadian media rarely mention him, and when they do they never write or say anything positive.
That's because his skin is the wrong color. If he was Black, he would receive the kind of attention people like Ali, Holyfield and Tyson always got. Yet he's a better man than any of them - he doesn't brag like Ali, doesn't deliberately headbutt like Holyfield, and doesn't bite ears off like Tyson. He has strength of character inside and outside of the ring.