Postpublished at 22:28 BST 12 September 2021
Is it nerves? Is it the occasion? We are not used to seeing this.
Image source, Getty ImagesUse play icon at top of page to listen to live commentary from BBC Radio 5 Live
Russia's Daniil Medvedev wins 6-4 6-4 6-4 against Serbia's Novak Djokovic in US Open final to win maiden Grand Slam title
World number one Djokovic had been chasing a record 21st men's Grand Slam singles title
This was second seed Medvedev's third Grand Slam final - the 25-year-old lost the 2019 final at Flushing Meadows to Rafael Nadal
Matthew Henry
Is it nerves? Is it the occasion? We are not used to seeing this.
Image source, Getty ImagesDjokovic 4-6 2-3 Medvedev
Gigi Salmon
BBC Radio 5 Live tennis commentator
What a celebration. You don't always see celebrations from Daniil Medvedev but he was jumping, he was pumping his arms.
One break was enough to take the first set, will one break be enough for the second? Because he's got it and he leads 3-2.
Djokovic 4-6 2-3 Medvedev*
He's got it!
Daniil Medvedev leads Novak Djokovic by a set and a break in the US Open final.
*Djokovic 4-6 2-2 Medvedev
Into the net goes the world number one in the most unusual fashion. Groans from the thousands inside Ashe.
Two break points for Daniil Medvedev...
*Djokovic 4-6 2-2 Medvedev
This is real late night drama now. Djokovic is still well below his best but the crowd are so involved.
So much - a calendar Slam and a record 21st title - is on the line for Djokovic who misses another straightforward forehand. 15-30.
Djokovic 4-6 2-2 Medvedev
Gigi Salmon
BBC Radio 5 Live tennis commentator
He shrugged his shoulders as if to say, okay I got that out my system.
He needed to do that, it was building up, it was bubbling up.
*Djokovic 4-6 2-2 Medvedev
Djokovic smashes his racquet into submission after missing a forehand! There's the release of emotion. He's absolutely furious. The crowd is booing but I think secretly they're loving seeing this from Novak. He wants it so bad.
Medvedev holds after a whole lot of a pressure.
Image source, Getty ImagesDjokovic 4-6 2-1 Medvedev*
A huuuuuge backhand down the line from Daniil Medvedev to save a second break point.
Gigi Salmon
BBC Radio 5 Live tennis commentator
We saw Novak Djokovic draw his arm back as if he was going to smash his racquet on the court in smithereens. But he doesn't.
Djokovic 4-6 2-1 Medvedev*
Oh my. Nerveless from Medvedev to win the point - and save break point - but Djokovic is ticking. He shapes to whack the loose ball in frustration just as a ball girl runs into picture. We have seen that before...
Gigi Salmon
BBC Radio 5 Live tennis commentator
Who pressed that button? A wedding anniversary gift!
Djokovic 4-6 2-1 Medvedev*
Controversy! Djokovic is up in the rally but a sound is played over the PA system.
The umpire calls a let. Medvedev will have a first serve too.
It's still break point...
Djokovic 4-6 2-1 Medvedev*
Medvedev misses a backhand and there are people on their feet around Ashe.
Break point Djokovic...
Djokovic 4-6 2-1 Medvedev*
The rallies are lengthening now. Deuce.
Image source, Getty ImagesDjokovic 4-6 2-1 Medvedev*
The crowd roars as Medvedev puts a volley out from around his head. He responds by booming yet another forehand. Djokovic, usually so quick, is nowhere near it.
30-30.
Djokovic 4-6 2-1 Medvedev*
Could this be a moment we look back on? Djokovic thumps a smash into the blue court and the ball bounces way out of Medvedev's reach. The history-chasing Serb pumps a fist, urging himself on. He holds after a fair bit of danger.
*Djokovic 4-6 1-1 Medvedev
What a time for Novak Djokovic to land one on the baseline. His wife Jelena is out of her seat applauding.
Still there is work to do...
Djokovic 4-6 1-1 Medvedev
Laura Robson
Former British number one on BBC Radio 5 Live
It's just surprising misses because Medvedev is not really doing much from the back of the court.
He really is just waiting for the Djokovic unforced errors to come - but they are coming, It's so unusual.
*Djokovic 4-6 1-1 Medvedev
Even the backhand is failing Djokovic. He calmly wipes away the sweat from his brow but he must be feeling uneasy at the very least.
Deuce again.
*Djokovic 4-6 1-1 Medvedev
Break point is saved by Djokovic with the first serve...