Novak Djokovic has been accused of breaking a rule at the Australian Open after a suspicious bottle - which appeared to have a note attached - was passed to him mid-match.
The World No.5 was playing against Enzo Couacaud in the second round in Melbourne and a video of the incident has emerged on social media. The clip shows a member of Djokovic's team suspiciously passing a bottle with a piece of paper attached to a tournament official, who then handed it to the Serb during a break in play.
The nine-time Australian Open winner is seen carefully reading the paper from the bottle.