Twenty years ago, you'd see guys busting rackets in locker rooms. Today they do it in their hotel rooms.

At 21, there's lots more room there, plenty of things to improve on as you get older.

You see Boris Becker, Mats Wilander, Nadal, Pete Sampras - they were all great when they were young. As a coach, you can see that type of talent at an early age.

Twenty years ago, you'd see guys busting rackets in locker rooms. Today they do it in their hotel rooms.

Sometimes when you're in the storm, it's harder and maybe when it's over, then you can look back on it.

Because you can't change results - I would change my losses, and I would definitely like to see on-court coaching.

I did a really good job of sticking to the tennis court.