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NOW: Novak Djokovic beats Daniil Medvedev 6-3 7-6 (7-5) 6-3 to win US Open
Serbian second seed Djokovic wins record-equalling 24th Grand Slam singles title
Second set lasted 104 minutes, with Djokovic saving a set point
*Djokovic 6-3 7-6 (7-5) 3-1 Medvedev
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
I can’t say how different Novak Djokovic looks. He looks like a different player, He looks energised and revitalised.
*Djokovic 6-3 7-6 (7-5) 3-1 Medvedev
That could be the decisive blow.
Medvedev goes long, a poor game from him, and Djokovic makes the breakthrough in set three.
He's just three games away.
Djokovic 6-3 7-6 (7-5) 2-1 Medvedev*
We're ticking towards the three-hour mark in this enthralling final.
Medvedev can't afford any slip-ups as he aims to clinch this must-win third set and a delightful sliced drop shot gets him up and running on serve.
But here comes Djokovic! A couple of misses from Medvedev hand over two break points.
Djokovic 6-3 7-6 (7-5) 2-1 Medvedev*
Lovely drop shot from Djokovic and Medvedev can't get there in this must-win set for the Russian.
So far, we remain on serve.
Jonathan Jurejko
BBC Sport at Flushing Meadows
"Just give me a minute," indicates Medvedev as he lies out on the court.
Djokovic leans on the net and then climbs over to help him.
Everyone needed a lie-down after that marathon second set.
*Djokovic 6-3 7-6 (7-5) 1-1 Medvedev
Woops! Medvedev reaches the forehand but slips over by the net and Djokovic steps over the barrier to help his opponent up.
The Russian checks his elbow for cuts and scrapes then motions to Djokovic he'd like to lie on the court for a moment before getting up.
Can't blame him after that exhausting second set. He's fine, though and we're good to carry on.
Djokovic 6-3 7-6 (7-5) 1-1 Medvedev*
Medvedev's polishes off a hold to love with a big serve of his own.
Neither player showing signs of giving up that level.
Djokovic 6-3 7-6 (7-5) 1-0 Medvedev*
Jeff Tarango
Former American tennis player on BBC Radio 5 Sports Extra
I think Daniil Medvedev thought that Novak Djokovic was going to buckle any second. There were too many holes in the ship and he was going to play the extended rally game, which had been working.
I think that Novak can go for a sprint here, try and get way ahead and coast in.
Djokovic 6-3 7-6 (7-5) 1-0 Medvedev*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
I thought there was no way that Djokovic was going to be able to win that set – but how many times have I said that.
Djokovic 6-3 7-6 (7-5) 1-0 Medvedev*
Djokovic's forehand is long but a big first serve from the Serb gets him on the board in this third set.
Over to you, Medvedev.
*Djokovic 6-3 7-6 (7-5) 0-0 Medvedev
A bit of nifty net play and a stunning cross-court forehand and we're just seeing a few signs that Djokovic is not here to mess around in this third set.
That second set was a grueller for both players.
*Djokovic 6-3 7-6 (7-5) 0-0 Medvedev
It was Medvedev's left shoulder that was receiving a bit of attention during that medical time out.
Djokovic also left the court for a breather and a pep talk in the mirror but we're back in business now.
Djokovic 6-3 7-6 (7-5) 0-0 Medvedev
Daniil Medvedev has the trainer on to receive some treatment.
That felt a pivotal set, and he had his opportunities as Novak Djokovic showed some signs of vulnerability.
But he's going to have to produce something very special to turn this around.
Djokovic 6-3 7-6 (5-7) Medvedev
Image source, Getty ImagesIt's a long way back for Daniil Medvedev from here.
For Novak Djokovic, Grand Slam number 24 is just one set away.
Image source, Getty ImagesJonathan Jurejko
BBC Sport at Flushing Meadows
"What's all the fuss?" shrugs Medvedev after winning another contender for point of the match.
Some of these exchanges have been beyond belief.
The crowd go apoplectic after Djokovic scrambles and Medvedev grinds.
Djokovic 6-3 6-6 (6-5) Medvedev
Djokovic levels things at 5-5. Who will get the first set point of the tie-break?
It's going to Djokovic.
*Djokovic 6-3 6-6 (4-5) Medvedev
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra
I can’t believe what we’re witnessing. This is outrageous tennis.
What a treat.
*Djokovic 6-3 6-6 (4-5) Medvedev
What. A. Point.
Neither player will give anything up and, after Djokovic mixes things up with a drop shot, it's Medvedev who delights the crowd with a wonderful touch over the net.
A psychological blow? Perhaps. But it brings him to 5-4 in the tie-break.
Djokovic 6-3 6-6 (4-3) Medvedev*
Jeff Tarango
Former American tennis player on BBC Radio 5 Sports Extra
Medvedev is so robotic right now, he can only do so much.
He is tired but he is doing a great job of not showing it.
Djokovic 6-3 6-6 (4-3) Medvedev*
Medvedev does well even to get across the court to get a racquet on that volley, but sends his return long as Djokovic hits the front for the first time at 4-3.