There's certain things that you cannot cross, no matter who you are, what you're doing or where you're coming from.

I would say that Roger Federer is pretty amazing. And Manny Pacquiao - he's such a tiny, little lightweight guy, but the way he fights makes people so excited.

He [Tyson Fury] will be difficult opponent to adjust to, because of his style of fighting and physical conditions. Fans will certainly not be bored.

You can train your mental strength just like you train your body. If your body looks fit or ripped, it looks strong, and you can flex your muscles. So, physically, you have a certain strength. Mentally, it's the same thing. You can train your psychological strength.

Nobody is born as a champion. You have to earn it through hard work. Get started!

It's such a gift in my life to be able to compete - to have the health.

I think that there's only one nationality and one language in the sport, and you call it performance.