Djokovic faces a sideline spell with muscle tear after sweet success

Novak Djokovic will need to spend some time on the sidelines recovering from a muscle tear that hindered him in the later rounds of the Australian Open, the Serbian said as he celebrated his ninth title.

The 33-year-old extended his own record with an emphatic 7-5, 6-2, 6-2 victory over Daniil Medvedev at Rod Laver Arena on Sunday, despite carrying the injury suffered in the third round of the tournament.

Parading his trophy on the beach in the Melbourne suburb of Brighton on Monday, Djokovic said a second scan of his abdomen had revealed he had made the injury worse by playing on.

"I just came actually came from another MRI that I've done this morning and the damage is bigger than what it was when it happened, when I did the first MRI after the third round," he told reporters.

"It's not too bad judging by what doctor said but I'll have to take some time off and heal. The tear is bigger."

The injury was not the only issue Djokovic had to contend with during his time in Australia.

The world number one riled some locals when he submitted suggestions to organisers over how quarantine conditions for players could be improved.

The ups and downs of what he described as a "rollercoaster" of a trip Down Under had made his 18th Grand Slam title triumph all the more satisfying.

"I reflect on it as a great experience, and a unique journey, and I would definitely remember and try to take out a lot of positives from it," he said.

"I have learned a lot of lessons, and learned a lot of things, about myself and about everything that was going on in the last five to six weeks, but I think that everything that was happening on and off the court makes this victory even better and even sweeter."

Djokovic said he had celebrated his triumph by calling his family back home in Serbia and sitting down for a meal capped off with a cake.

"I used to go wild and go to discotheques and nightclubs...and now it is a bit different," he said.

"A different kind of celebration, more of a home a celebration with family and close people."