LIVE: 'Never seen' Djokovic shocker as upset looms
At deuce in the 10th game of this third set, play has been halted to that paramedics can attend to a man in the stands.
The chair umpire is on the phone trying to get an understanding of the situation but the players will take a seat in the meantime.
"I think we have medical situation it is just going to halt play at the moment," Jim Courier says in commentary for Nine.
"It is awkward just from a competitive standpoint in the timing of this match."
Novak Djokovic has hit more winners than Jannik Sinner but his number of unforced errors significantly outweigh the Italian's.
"A lot of those [errors] are being driven by Sinner's aura, on what he is capable of, on both sides, forehand and backhand. Sinner has power on both sides of the ball," Jim Courier says in commentary for Nine.
But Djokovic is turning things around in this third set.
He leads 5-4 with Sinner's serve to come.
Novak Djokovic holds and we're in unchartered territory in this match.
He has lifted his serve up to 65 per cent but is still winning only 61 per cent of them.
His ball striking has also improved. He has five winners to five unforced errors in this set whereas he doubled his unforced errors to winners in the first two sets.
"He is levelling off and levelling up," Jim Courier says in commentary.
A quick hold of serve for Jannik Sinner as he takes the game to love from Novak Djokovic.
After exerting so much energy to hold serve in the previous, has the Serb lost his puff?
Some huge rallies in this game as Novak Djokovic tries to hold his opening service game!
"Djokovic refusing to budge," Sam Smith says in commentary for Nine.
"Turning the start of this third set into a street fight."
Surprisingly, no toilet breaks from either player at the end of the second set.
Novak Djokovic wants to persist.
In 73 minutes, Jannik Sinner brings up a two sets to love lead over Novak Djokoivc after taking the second set 6-2.
"When was the last time Novak has been beaten 6-1, 6-2, at any tournament?," asks Jim Courier in commentary.
"You would have to take a good long look in the past for that
"This has been almost beyond belief."
This is a situation at the Australian Open that Djokovic has never come back from in all of his 19 visits to Melbourne.
Novak Djokovic's woes on serve continue.
Jannik Sinner grabs the double break and is now serving to go two sets to love up.
"It feels like a red-line moment, doesn't it?," Sam Smith says in commentary for Nine.
