I've been kicked in the teeth more times in tennis than the law ought to allow.

Tennis was always there for me, which was lucky. I would go play baseball, basketball, football, hang with my brother, do whatever, and at the end of the day I'd come back and say, 'Hey, Mom, would you hit 15 minutes worth of balls with me?'

Greatest thing in life: Winning a tennis match. Second greatest thing in life: Losing a tennis match

The minute you think you know everything about tennis is the minute your game starts going down the tubes.

That's something a lot of athletes miss - a lot of them walk away too soon. They don't get everything out of their system. They have a lot of what-ifs when they're sitting around later in life. I don't have that. I got all that out of my system. I pushed it to the brink, I loved it, and when I walked away, I'd had enough.

But why should I read what somebody else thinks of my life when I know the real story?

I'm getting tired of saying hello to Stan Smith and not getting any reply. I'm cocky and confident and maybe I'm too bullheaded sometimes, but I think I have some fan and player support. I know what the others say, but I'm not that obnoxious. I am not a punk. I'm 5' 10", 155 pounds. I've got broad shoulders and I can pack a punch. Most of these guys are windbags anyway. If they ever try anything with me, I'll be to the net fast.