Doing all those tedious things in rehab made me more disciplined and focused on the things I have to do for my tennis.

These were the moments when I was disappointed and frustrated, when I got so low because it seemed all my hard work had been wasted. But the moments passed, and the motivation to go back to rehab was there again.

My instruction to them is to just go down there and to be focused and be disciplined in the game... try to relax as much as possible, enjoy what they are doing and try to play to the game plan as much as they can.

Physically, I feel extremely well, perhaps fitter than ever.

When I was younger I used to have little aches and pains but they always disappeared, ... fling.

You can wake me up now - these last four weeks in America have been incredible.