Golfers are forever working on mechanics. My tennis swing hasn't changed in 10 years.

It's one-on-one out there, man. There ain't no hiding. I can't pass the ball.

I made it look so easy on court all those years. No one realized how hard I had to work. No one realized how much I had to put into it. They underestimated my intensity.

I'm enjoying my retirement, enjoying my life. I have two kids and a lot of my time is spent chasing these two animals.

I did it my way, and I have no regrets when I look back on my career that it was just a big focus for me.

Tennis obviously isn't as popular as baseball in the States.

I feel much more respected in Europe than I do in the States from the press and from the people. Americans expect me to win every match I play.