I'm a golfer - not an athlete.

I'm 37, I'm pretty fit and feel I have another eight years left - which means there's 32 Majors still to go at.

People always say golfers don't smile. But there is so much psychology in golf so we have to be a bit robotic.

I never take myself too seriously.

Golf is played between the ears and if you are not 100 percent focused on what you are trying to do, then people will go past you no matter who you are.

I'm heavier, but with muscle rather than flab. It's a massive difference. It means I don't get as tired sometimes and it means that I'm hitting the ball a lot farther, about 15 yards more with my driver.

My dad said: 'It looks like you'll be world No.1 in a few hours and I wanted to be the first to say congratulations.