I read in one of the Tennis magazines that this is just a habit for some, that it's a mental thing, almost like a superstition. You know how these tennis players are, we develop all kinds of weird habits to get us through a match. lol!
".. IF U WANT TO BE PROFOUND! IF U REALLY NEED TO JUSTIFY! TAKE A BREATH AND LOOK AROUND..A LOT OF FOLKS DESERVE TO DIE!!"-AUDREY II