Novak Djokovic is an athlete involved in professional tennis.
The Australian Open is a major tennis tournament held annually over the last fortnight of January in Melbourne , Australia . The Grand Slam tournaments , also called majors , are the four most-important annual tennis events . Novak Djokovic ( Новак Ђоковић , Novak Đoković , [ nôʋaːk d͡ʑôːkoʋit͡ɕ ] ; born 22 May 1987 ) , often referred to by the hypocorism Nole , is a Serbian professional tennis player who is currently ranked world No. 2 in men 's singles tennis by the Association of Tennis Professionals ( ATP ) . Djokovic 's records include breaking the single-season record with six masters titles in 2015 , winning 31 consecutive ATP World Tour Masters 1000 series matches , playing in the finals at all nine ATP Masters 1000 tournaments ( shared with Roger Federer and Nadal , and being the only player to win eight of the nine events ( and at least twice ) .