Milos Raonic of Canada, Caroline Wozniacki of Denmark, Roger Federer of Switzerland, Lleyton Hewitt of Australia, Victoria Azarenka of Belarus and Novak Djokovic of Serbia pose with Nickelodeon presenters and the Teenage Mutant Ninja Turtles following the Rod Laver Arena Spectacular as part of Kids Tennis Day presented by Nickelodeon ahead of the 2016 Australian Open at Melbourne Park on January 16, 2016 in Melbourne, Australia.