Lee Westwood

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

People mature at different stages and I feel I'm learning a lot.

Sometimes Americans don't quite get my sense of humor. My good ol' British sarcasm seems to go over their heads.

Listen, everything I did in my childhood was competitive. Everything we did my dad made it into a game to win. We used to drive my mum nuts.

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.'

The satisfaction you get when you finally beat your dad is amazing, that rush of adrenaline.