When your four biggest tournaments all operate relatively independently, and the ATP and WTA tour operate independently, and you have Davis Cup and Fed Cup that operate independently, it makes it a tough message.

There are only four U.S. tournaments that the very best players in the world play every year - Palm Springs, Miami, Cincinnati, and the U.S. Open. So how would golf or NFL or NHL fare if there were only four times a year that their very best were visible? Tennis went international, and for us to expect it to be popular media-wise is very naïve. And that translates into children and families being interested.

Tennis is more than just shots. It's about being clutch and beating the people on the other side of the net.

If I had to choose one man to play for my life, it would be Nadal.

Flying has opened up new horizons for tennis.

The dumber you are on court, the better you're going to play.

I think there's no reason the Davis Cup couldn't be as powerful and popular and profitable as any of the four majors are today, given some changes.