Novak Djokovic is a professional tennis player.
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 ) .