Djokovic is already the tennis player with more crowns in the first Grand Slam of the year in a duel that dominated from beginning to end, in which Nadal could not even break Serbian service. He overtakes Roger Federer and Roy Emerson, who had six.
"Being here in front of you with the trophy, after winning three of the four big ones, is really incredible," said the winner, 31 years old.
With his triumph, Djokovic chain trophies to Wimbledon, US Open and Australia, to reach the top 15, two to Nadal and five to Roger Federer, who has the record.
The Serbian also became the first player to repeat three times the series of three major consecutive (three between 2011 and 2014, four between 2015 and 2016).
Nadal, the winner in Melbourne in 2009, loses its fourth final, after those of 2012, 2014 and 2017, after a spectacular tournament, in which he beat in the semifinals of the moment, the Greek Stefanos Tsitsipas, twig of Federer in eighth.
"I can only say one thing, I will continue to fight hard, I will continue to work hard to be a better player," said the 32-year-old Spaniard.
This Sunday at Rod Laver Arena the world number 1 was far superior. He demonstrated it from the start, when he made a break and placed 4-0, with a rhythm of play and a success he maintained throughout the game, unattainable for Christmas.
Rhythm, success and service
It was a very different scenario in the previous game in which they played for the title in Australia in 2012, when the Serbian needed 5 hours and 53 minutes to go to Spanish, in the longest end in the history of the Grand Slam.
The win allows Djokovic to lead 28 wins – for 25 defeats – his balance with Nadal, in the 53 confrontations between the two, the players who have faced most in the Open era.
The superiority of Djokovic is reflected in figures as it did not yield a point in its first four services to the service, taking the first set in 36 minutes.
Nadal had only one break ball in the whole game, and did not take advantage of it.
The second set had a similar pattern, with Djokovic maintaining its service with ease and suffering Nadal not to lose it.
The pressure went up in the fifth game, with the Serbian reaching the break, definitive in this second hose.
Nadal, out of control, was able to temper her nerves in the third and offer some resistance.
But Djokovic was very far away – he only made nine direct fouls – and after saving his only ball of break, after an hour and 45 minutes, he shot himself into the trophy.
In May, in Roland Garros, Djokovic will try to chain the four big ones, in a tournament in which Nadal, owner and lord, defends title and looks for his historic 12th trophy.