There are a bunch of young players coming up and doing incredible stuff.

This is what I've always wanted to do. I've always wanted to be a professional tennis player.

I've played so many matches in my career so far where I played unbelievable, came up just short.

My academy did a great job of getting my story out there for people to hear about me, get interested and wanted to fund me.

I would say my greatest achievement in life right now - my greatest achievement period is - and I'm still trying to achieve it - is to be a wonderful father to my kids.

My favorite type of pet has always been a dog. They're loyal, kind, and offer endless affection. My friend Eric says, 'The more people I meet, the more I like my dog.' Funny thought.

I remember clearly the afternoon I sat down with Obama. In December 2006, he was preparing for a family trip, and the decision to run weighed heavily on his mind. As a progressive member of Congress from Illinois, I was excited and energized by the prospect of my senator, and my friend, running for president.

I always wanted to do creative things, but I was really interested in entrepreneurship. My family comes from a very entrepreneurial culture, so business was always something I was interested in.