Originally Posted by tennis_balla
Has Nadal, Federer, Djokovic stayed on top for so long because of technique, or because of mental toughness? Explain your answer.
Combination of mental toughness, athleticism, and a bit of luck.
Professional Movie Director: "LeeD, the most interesting man in the world"
"Call me the Chinese Andre Agassi. Image is Everything." - Maximagq