Mental Strength is the Main Edge
Novak Djokovic, after sitting at number 3 for many years, finally developed the inner belief to break the Federer / Nadal monopoly, and now looks ready to take the game to a new level and reign for the next tennis generation, with Andy Murray challenging, and other players on the way up.
Mental strength is the main edge these players have over the others, even though they do not always rate in the yearly stats where other players may serve more aces, hit more winners etc.
It’s the mental strength which give the top players that vital ‘X factor’ that ensure they shake hands as the winner most of the time.