The Serbian will now overtake Olympic champion Roger Federer of Switzerland with the most weeks at the top of the men's world rankings.
Novak will go down in history as one of the greatest tennis players in history.
But will Djokovic play at the Tokyo 2020 Games in 2021 to win the elusive Olympic singles tennis title? What Olympic moment in his career was 'heart-breaking'? And has he ever lost an Australian Open final?
We have some of the top things to know about Novak Djokovic following his historic ninth trophy win at the 2021 Australian Open.
Has Novak Djokovic ever lost an Australian Open Final?
Incredibly, Novak Djokovic has never lost an Australian Open final.
He’s reached the final nine times and won nine times.
Djokovic’s first Melbourne victory came in 2008 when he beat Jo-Wilfried Tsonga of France over four sets and a tie-break.
What is the one match Novak Djokovic would change?
With over a decade of dominance playing against some of the greatest tennis players of any generation, Novak Djokovic has won it all.
Except an Olympic title.
Speaking to double Olympic champion Andy Murray of Great Britain, Djokovic revealed that he would love to go back and change not just one but two of his Olympic tennis defeats.
He lost to Murray in straight sets in the semi-finals at London 2012.
And, back in 2008, he lost again in the last four to eventual winner Rafael Nadal.
It haunts him even now.
“I missed an overhead, very easy overhead, which is quite typical of me throughout my career.”
Djokovic ended up with the bronze in Beijing, but missed out on a medal in London.
What does Novak Djokovic deem to be ‘one of the most heart-breaking’ moments in his career?
The 2016 season started with a bang for Novak Djokovic. He won the Australian Open and then became the French Open champion for the first time.
He went into Rio 2016 as one of the favourites.
“I built, with myself, a huge expectation for the Olympic Games in Rio. I was No.1 in the world and won four Slams in a row. Also, I was at the peak of my career in terms of results, in terms of how I play, how I feel,” he said.
Juan Martin del Potro was his opponent in the first round in Brazil, the man who beat him to London 2012 bronze.
“I felt if there was ever a time for me to get the gold medal or fight for a gold medal it was now,” he noted.
“It was just very heart-breaking because the Olympics is the most important sports manifestation in the history of sports. Also, representing my country at such an event is a huge honour and privilege,” he added.
Will Novak Djokovic play at the Tokyo 2020 Games in 2021?
As it stands, there seems to be no reason to believe that Novak Djokovic won’t attempt to win his first Olympic gold medal at the Games in Japan.
Speaking in February 2020, Djokovic confirmed his intention to play.
“I had the honour to win the bronze medal for Serbia in Beijing in 2008, and I feel that the moment has come to win another one,” Djokovic said.
“I will give my best to prepare and be at my top level for the Olympics and Grand Slam tournaments.”
Novak Djokovic's Monte Carlo foundation
Novak Djokovic left Belgrade after bombing raids in 1999 to move to Germany and follow his passion for tennis.
Once he began to succeed, he decided that he needed a quieter life.
"You never know where life will take you to," he said back in 2008.
"I'm only 21 and so I have plenty of time on my side.
"My goal is to become the best tennis player in the world," he added.