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.

Andre Agassi was my rival in the '90s, and I think as we got older we sort of transcended the game. He was probably the best player I ever played over my career. There's a list of players that were tough, but Andre, certainly, he was the most unique.

All I cared about in tennis was winning.

I loved Wimbledon and what it meant, but the surface felt uncomfortable. I just didn't like it, I was a hard-court guy, a Californian kid.

I always watch Chelsea games when I have the time and step-by -step, game-by-game, Chelsea is growing. I speak with Branislav Ivanovic, my friend and international team-mate a lot, a few times each month, so I know everything about the club.

If someone wants to call me a Harlem Globetrotter, well, great, go ahead. I was very good at basketball. I was a really good point guard. I was the best passer.

The longer you stay out of this sport, the less sharp you are, and I've been aware of that; that's why I've stayed and haven't wanted to retire and come back - because you skip a beat.

I wanted to be a professional athlete. Young men and women from Montana don't make it to the professional level that often. And I always believed that because I was a great football player that made me better than you. And that's not the case at all.