I've been good about keeping my nose to the grindstone.
My serve has killed a small dog ... I'm joking, I'm joking! The dog was huge!
It's pretty high up there on the list. Being able to return a serve at that speed is one of the biggest things that separates the professionals from the recreational players.
I like grass, I enjoy it and it suits my game.
I used to go to the US Open on my birthdays and sit in the nosebleeds.
For every bad moment I've had, there have been 25 positives.