The Tyson fight was like the hardest I ever trained for a fight in my entire career.

Every era that comes along has a superstar that emerges. Once we are out of the game, there will be a superstar who will emerge that everyone will notice.

The mission I set out on in the beginning - to become heavyweight champion of the world, undisputed, lineal champion - you could say that mission is complete.

[Wladimir] Klitschko has got the experience, so if Tyson [Fury] waits on him, Klitschko will out-box him. But if he uses his speed and reach it will be a great chance for him to win.

Boxing always was corrupt and always will be corrupt. The three world champion's belts really are absurd. One single association would make this business more reputable. Just as powerful as the promoters, is the media. The cable networks control the cash flow. You can’t ignore the influence the media and the promoters have on the sport. They have a financial objective - high ratings, selling pay-per-views and selling out arenas. Because of the system, the public may not be seeing the best the sport has to offer, but what sells.

I'm undisputed and there's no disputing that.

Now I am ready to set new goals and start a new career for myself outside of the ring.