When I was 18, 19, I was presented as the 'aw shucks' Nebraska kid who's coming up with a big serve, and then I flipped out a couple of times, and then I was ueber-brat, when I feel like there's parts of both, but I don't think I am either one, if that makes sense.

Well, immediately we announced yesterday or the day before we're building, with my foundation, a youth tennis and learning center in Austin. I'd like to be hands on with that and not see it periodically.

I think it's foolish to think that if you've done something for so long, you can kind of delete it out of your memory bank or delete every emotion attached to it. I knew when I retired what that meant.

My entire career, I've been a worker.

I don't generally follow sports. At an early age, I discovered that nature had apportioned me only a small reserve of enthusiasm. Best to ration.

I'm a white guy in a black sport. I really forget about it until someone asks me about it. I'm simply competing in a sport that I love.

The World Cup is a competition in which everything needs to work to your advantage. Players need to be fit, decisions have to go in your favour, and details such as a red card can cost a team dearly.

I don't recommend steroids for everyone, and I don't recommend growth hormones for everyone. But for certain individuals, I truly believe, because I've experimented with it for so many years, that it can make an average athlete a super athlete. It can make a super athlete - incredible. Just legendary.