Novak Djokovic won the first two Australian Open titles in the men’s tennis world

Novak Djokovic defeats Stefanos Tsitsipas in Astana Open final to win his 90th career ATP title and his 13th Grand Slam title at the age of 38

Novak Djokovic became just the third man to win at least 40 tour titles in the rankings era, joining Rod Laver in 1938 and Rod Laver in 1977

The first two titles: the Australian Open in 2009 and Wimbledon last year were for the men

He is still the world’s top-ranked player on both surfaces

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