Australian Open: Novak Djokovic forced to retire from semifinal
Novak Djokovic retired injured after losing a gruelling first set of his Australian Open semifinal to Alexander Zverev, ...
Revealed: The small detail in this Australian Open photo that reveals history has been made in Melbourne
With all the attention on Novak Djokovic's quest to become the first player to win 25 grand slam titles in Melbourne this week, another history-making moment slid under the radar - until now.