To be a professional tennis player you need to put in these sort of hours.

But I still serve pretty big and that's one of my biggest weapons, so if my shoulder holds up and I can count on it, I can win a few matches and then you never know how the other guys are going to react to the fatigue and the length of the matches.

I think our strength is this strong relationship we have all together.

To be a professional tennis player you need to put in these sort of hours.

It's better to have done because then you know what the player is going through and you understand the pressure, but then on the other hand I know a lot of people that were good players but not good coaches, and vice versa.

If you lived the doubles, as I did, which was very stressful, you are sitting down in a chair experiencing a match without being able to hold a racquet in your hands.

I think each player and myself live things differently because I have no physical effort to make.