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PERTH, AUSTRALIA - JANUARY 07: Lleyton Hewitt of Australia Gold serves in the men's single match against Alexandr Dolgopolov of the Ukraine during day five of the 2016 Hopman Cup at Perth Arena on January 7, 2016 in Perth, Australia. (Photo by Will Russell/Getty Images)

McHappy Day

NEWS FEATURE Will Russell The Sunday Times Pictured is Darcy Rosewood, 3 with Nine News presenter Libby Stone who is going to be a McHappy Day ambassador.

2014 Hopman Cup - Day 6

PERTH, AUSTRALIA - JANUARY 02: Eugenie Bouchard of Canada serves to Bojana Bobusic of Australia representing Italy in the mixed doubles match during day six of the Hopman Cup at Perth Arena on January 2, 2014 in Perth, Australia. (Photo by Will Russell/Getty Images) *** Local Caption *** Eugenie Bouchard

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PERTH, AUSTRALIA - JANUARY 08: Nick Krygios of Australia Green plays a backhand in the men's single match against Kenny De Schepper of France during day six of the 2016 Hopman Cup at Perth Arena on January 8, 2016 in Perth, Australia. (Photo by Will Russell/Getty Images)

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PERTH, AUSTRALIA - JANUARY 06: Andy Murray of Great Britain serves in the men's single match against Nick Krygios of Australia Green during day four of the 2016 Hopman Cup at Perth Arena on January 6, 2016 in Perth, Australia. (Photo by Will Russell/Getty Images)

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PERTH, WESTERN AUSTRALIA - AUGUST 14: Matthew Pavlich of the Dockers is grabbed by Kyle Hartigan of the Crows during the round 21 AFL match between the Fremantle Dockers and the Adelaide Crows at Domain Stadium on August 14, 2016 in Perth, Australia. (Photo by Will Russell/AFL Media/Getty Images)