Australian fans watch the second round match between Sam Groth and Thanasi Kokkinakis, both of Australia, at the Australian Open Grand Slam tennis tournament at Melbourne Park in Melbourne, Australia, 21 January 2015. EPA/DAVID CROSLING AUSTRALIA AND NEW ZEALAND OUT

Australians pose with their national flag on front of the Rod Laver Arena on the first day of the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 19 January 2015. The Australian Open tennis tournament will go from 19 January until 01 February 2015. EPA/Narendra Shrestha

Fans of Andy Murray of Britain watch him play Marinko Matosevic of Australia during their second round match at the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 21 January 2015. The Australian Open tennis tournament goes from 19 January until 01 February 2015. EPA/Filip Singer

Polish fans cheer during the men’s second round match between Jerzy Janowicz of Poland and Gael Monfils of France at the Australian Open Grand Slam tennis tournament at Melbourne Park in Melbourne, Australia, 22 January 2015. EPA/JULIAN SMITH AUSTRALIA AND NEW ZEALAND OUT

Australian fans watch a match during the Australian Open Grand Slam tennis tournament in Melbourne, Australia, 21 January 2015. EPA/LUKAS COCH AUSTRALIA AND NEW ZEALAND OUT

Australian fans watch the second round match between Sam Groth and Thanasi Kokkinakis, both of Australia, at the Australian Open Grand Slam tennis tournament at Melbourne Park in Melbourne, Australia, 21 January 2015. EPA/DAVID CROSLING AUSTRALIA AND NEW ZEALAND OUT