Everybody knows about Novak Djokovic’s movement, the textbook backhand and that fearsome mentality to always respond during vital points. But even at 35 years of age and with 21 grand slams triumphs, there is a nuance to his game, a subtle adjustment to underline his relentless desire to improve and drain a final drop of potential from an extraordinary career.
Inconsequential to many watching, but Djokovic’s second serve in his straight-sets Australian Open quarter-final victory over Andrey Rublev demonstrated how difficult it can be to expose the Serbian’s vulnerable side.
