During an interview, in which Nadal was directly asked if he believes in God and what he thinks about athletes who cross themselves during game play, he said:
SI.com: Do you believe in God? We see football players crossing themselves. You don’t do that. Do you do praying?
Nadal: It’s hard to say, “I don’t believe in God.” I would love to know if God exists. But it’s a very difficult thing for me to believe. I don’t know. It’s private and I don’t want to speak about it, but I say, “If God exists, you don’t need [to cross yourself] or pray.” If God exists, he’s intelligent enough to [do] the important things, the right things.
Sports Illustrated , 16 july 2010
Nadal is more of an agnostic those days.
Apparently, Nadal just counts on his skill, athleticism, and hard work to win tennis matches.