Fantasy poll: You'll be given one skill, to be the best in the world at this one and only one skill, all other skills are up to you to develop and make stronger. Which one would it be? You could be the best server meaning it would take a phenomenal effort to break you and even top ATP players would have a world of trouble breaking you. You could have the best forehand with precision, heavy pace, and good spin. You could be the greatest volleyer, and good approach shots are included with this skill. You could have the best backhand, etc.. Which would you pick and why?