How exactly do we measure greatness?

By the number of titles? The number of Grand Slams? Maybe. But not only. Because there are certain things that numbers can't convey. Numbers won't show that this man played the most boring tennis than anyone before. They won't show that that his man is the all-time least liked athlete in the world for his lack of grace and lack of elegance on and off the court. The truth is, from here on out, whatever the scoreboard says his legend can only decline because in time Novak Djokovic's legacy will prove more ephemeral than any number.