"I think I try my best every day to keep improving my tennis," he added. "I wake up every day in order to practice with the illusion to be better player than day before. I think I'm a more complete player than few years ago, I am sure on that. But being better doesn't mean that you going to win more. Because winning or losing depends on different facts and small things. I love to play big matches. I love to play in big stadiums like here, historic stadiums like Wimbledon. So for me, when I start playing my first match of the tournament in the Centre Court that is a dream." - Rafa Nadal.
This is the main reason, i adore him. He is humble. He knows his limitation. He continues practicing to get better. No matter what the result is, winning or losing: He knows, he is improving. No regrets.