tired of talking about who's fastest/strongest as the very definition of being a great athlete. Ashe mentioned about the role of static and kinetic balance has the hidden key to physical success on a tennis court. In this sense many players such as Hingis and McEnroe were often the best athletes on the court despite the more obvious speed and strength of their opponents. Its often the primary ingredient in consistency and defensive play both at net and at he baseline. So often errors we think of as being mental, reflect a player who's sense of balance is not as keen in awkward or even static positions. What role did this under appreciated quality play in successes/ failures of your favorite players? How much of this is taught/developed how much is a gift of birth?