Rory McIlroy

I wanted to make a point of basing myself at home, being close to my family. I'll never be able to repay Mum and Dad for what they did, but at least they know they'll never have to work another day. I'll do whatever it takes to look after them.

On the course, I sometimes eat a little sandwich or a slow-release energy bar - one on the front nine and one on the back nine. You're out there five hours, so you have to keep eating. You're going to burn at least 1,000 calories. I'll try to take in about 400-600 calories during a round and drink water.

I receive huge support from Irish and British sports fans alike and it is greatly appreciated. Likewise I feel I have a great affinity with the American sports fans. I play most of my golf in the U.S. nowadays and I am incredibly proud to have won the U.S. Open and U.S. PGA Championship in the last two years.

By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning.

We felt like when we went into last year we had a pretty good chance to win the championship from the previous year with the fall we put together. We've got the same everything now, so I think we can come back and be as strong this year.