Why do tennis players bounce the ball so much before a serve?

Question

Seriously!

Answer 1

In tennis, the serve is the only shot you have full control over. By bouncing the ball a few times before every serve, you get into a rhythm. It helps you focus.  

Answer 2

Ask Djokovic! LOL! :D

Answer 3

sometimes it's to concentrate, or if they're like me, its just a nervous habit, like when people move their racket strings or hit their hand with the racket

Answer 4

rhythm and to begin focusing on the next point. it can also be used to ruin the rhythm of your opponent

Answer 5

just like in basketball they always bounce the ball for a foul line shot or whatever its called they think of it as a good luck charm

Answer 6

to concentrate or to annoy the other person