Novak Djokovic is back in Australia and hoping to extend his record in Melbourne by making history once again.The Serbian has won nine of his Grand Slam titles in Australia, three more than any other player in the men’s game. Roger Federer is the closest in the Open Era with six AO crowns followed by Andre Agassi with four.The former world number one is hoping to extend that record further by competing for his tenth title and if he manages to do so, he will also level with Rafael Nadal in winning a record 22 Grand Slams men’s singles titles. Djokovic is playing the Adelaide International two weeks ahead of this year’s major and he hopes …