Novak Djokovic of Serbia hits a backhand volley during a practice session ahead of the 2017 Australian Open at Melbourne Park on January 12, 2017 in Melbourne, Australia Novak Djokovic has no pretensions to being a super spy but the number 007 has got the Australian Open champion “pumped” ahead of the year’s first grand slam. The 29-year-old Serbian joined Roy Emerson as the most successful men’s champion at the Australian Open last year when he beat Andy Murray for his sixth title at Melbourne Park.