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epa04564243 (L-R) Thanasi Kokkinakis of Australia, Nick Kyrgios of Australia, Eugenie Bouchard of Canada, Victoria Azarenka of Belarus, Ana Ivanovic of Serbia and Roger Federer of Switzerland, pose during the kids day at the Australian Open practice session at Melbourne Park in Melbourne, Australia, 17 January 2014. The Australian Open tennis tournament runs from 19 January until 01 February 2015. EPA/DAVID CROSLING AUSTRALIA AND NEW ZEALAND OUT