When I got drafted, I was a spread-option quarterback. It was, 'OK, you've got to get under center, throw to the fullback, throw to the tight end. You've got to learn to be a pro quarterback.' And there was a learning curve there, and I did have to learn some of that.

Playing quarterback, you rely on everybody. Everybody impacts you.

When I watch good friends play, it's almost worse when you're watching, because you have zero impact: you have zero hand in what's going on. When I'm playing, you don't have that because I'm involved in it. I have some kind of say in what's going on.

I think the quarterback position, moreso than in all of sports, no other position compares - you rely on so many people to do your job.

To me, I would say that Cesar is underrated. As a defender, he has got everything. He's quick; he's got that desire, passion for the game. He just wants to play football. Azpilicueta is never tired. He can run all night in every minute. He wants to play every game.

Floyd Mayweather is in the sport to give great performances.

As a child I was very involved with sports and I knew at age 9 that I wanted to be an Olympic champion.

As a multisport athlete, I was always fascinated with competition and how to win. At HBS and later at the Harvard Department of Economics, I was drawn to the field of competition and strategy because it tackles perhaps the most basic question in both business management and industrial economics: What determines corporate performance?