I'm quite shocked by the recent British media stories about an alleged brawl between myself and Dereck Chisora. I am a professional prize fighter and let my fists do the talking only inside the ring. I don't want to comment on Chisora's psychological issues.

I don't like to get hit, who likes it? I probably wouldn't do this sport if I was getting hit that much.

You can take your fitness seriously, but not yourself. That's the most difficult part: not to relax. That's the most difficult challenge I'm facing every fight.

I would compare it to an actor. I drive myself into the character that later on is in the ring.

From nothing to everything is a long way, from everything to nothing is one stop.

The whole key is to be honest with yourself, find the weak spots, work on it, get it done.

Criticism is a great motivation. Failure is not an option to me.