I have been seeing Nadal play some matches lately on TC. I noticed something that I wonder if he does on purpose to better suit his game.
He steps up to serve the ball. He starts bouncing the ball with his racquet in his left hand. With his right hand he pulls the shorts out of his butt, and then tugs on his shirt, then wipes the sweat off of one side of his face, then nose and then other side of his face. He does not wipe the sweat off of his hand, which has to be pretty sweat soaked at this point (it would be if I did that routine) and then immediately holds the ball in his hand that he just wiped all the sweat onto.
Is he doing that on purpose to wet down the ball and slow it down over the course of the life of that ball? Yeah I know they only use the same balls for 6 games, but dude is wiping sweat all over those balls. At that level of tennis it makes you wonder if that could actually help Nadal. If Nadal liked quick pace I would say he is not doing it on purpose. But Nadal loves slower pace balls. He likes time to run them down as well as does not like to play people who can hit super hard.
Interesting food for thought.