There are many moments during a match when you are tense, wrestling with yourself. Tennis is a lesson in self-control.
Rafael NadalFor sure, with golf it's not a physically demanding sport like tennis. That's what makes tennis great - you combine both things. It's a very mental sport and at the same time can be dramatically physical. But I do admire the mentality of sport more than the physicality because physical performance is much easier to practice than mental performance.
Rafael Nadal