Flags and Wallies: Melbourne Park fans spark player anger at Australian Open

• Djokovic rails at drunk' spectator on Rod Laver Arena
• Russian player Rublev barracked by Ukraine supporters

Spectators at the Australian Open were in the spotlight on Thursday after separate incidents sparked player anger on the court at Melbourne Park and the crowd stayed until 4am watching Thanasi Kokkinakis play Andy Murray.

In his second-round match against France's Enzo Couacaud on Rod Laver Arena, Novak Djokovic complained to the umpire after appearing to be barracked by a supporter, one of several dressed in a Where's Wally? costume.