I've been in the twilight of my career longer than most people have had their career.

The goal for the Laureus Sport For Good Foundation is to give kids an opportunity to be involved in sports and hopefully learn some lessons along the way. We want to put them in a safe environment, help them if they need it and maybe they will get a scholarship to a school because of the skills that they learn. Sport is just a starting point.

All top players are the same strokewise, but mentally I can improve and that's where it's at for top players.

If it feels right in your gut, this is who you are, this is what you do, this is what you feel, then don't hide that. You just stick to it and the world will catch up.

I shouldn't say I'm looking forward to leading a normal life, because I don't know what normal is. This has been normal for me.

The only people that really have a chance against Serena [Williams] are people that are strong, that can handle her power that move well, and that's a difficult combination.

I've been talking to Martina [Hingis] about playing for a couple of years. Maybe I can convince her to play some doubles.