I just came across this site. it has an article on Rafa and the other top guns:
http://www.crunchsports.com/category/tennis/
http://www.crunchsports.com/category/tennis/indian-wells-2014-rafael-nadal-is-red-hot-favorite-to-retain-his-title-201403030022/
People always accuse Rafa of fake humility when he doesn't consider himself a favorite in any tournament, but I actually understanding his reasoning, based on the fact that :
ANYTHING CAN HAPPEN
And as much as this adage is repeated over and over in history, people are still shocked and blown away when upsets happen. It's very odd to me, but like Nadal, I don't believe in favorites, H2H statistics, or any other thing, but you can have a bad night's sleep, be lethargic from having a cold, or an upset stomach. Anything can throw you off of your game, just like us in real life.
Some days you're ultra productive, and other days you're working at half speed.
Don't believe in favorite.