Men's singles final at US Open
LIVE: Carlos Alcaraz beats Jannik Sinner 6-2 3-6 6-1 6-4 to win sixth Grand Slam title
Alcaraz will leave New York as world number one
Defending champion Sinner beat Alcaraz at Wimbledon in July
But Alcaraz edged epic against Sinner at May's French Open
Listen to BBC Radio 5 Live commentary from Flushing Meadows (UK only)
Sinner 2-6 6-3 1-6 4-5 Alcaraz*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
I would love to know what Alcaraz is thinking about as he comes to serve this game out. He was very early coming up to prepare to serve.
Sinner is going to go down swinging. But Alcaraz is holding onto his nerve.
Sinner 2-6 6-3 1-6 4-5 Alcaraz*
A rare miss from Alcaraz as Sinner somehow wins the point after a 134mph serve - the fastest of the tournament.
Sinner 2-6 6-3 1-6 4-5 Alcaraz*
Sinner sends his forehand wide.
Deep breath from Alcaraz as he nails the serve and forehand off his second serve for 30-0. Two points from the title.
Sinner 2-6 6-3 1-6 4-5 Alcaraz*
Marion Bartoli
Former Wimbledon champion on BBC Radio 5 Live
Sinner is feeling so much pressure from the back of the court.
This will be fascinating for Alcaraz to serve this out. It will be a showdown like never before.
It is very nerve-wracking having to serve it out. But these two are at another level.
Sinner 2-6 6-3 1-6 4-5 Alcaraz*
Alcaraz will serve for the title next. One last chance for Sinner? Based on Alcaraz's serving performances so far tonight, it's a very tall order.
Sinner 2-6 6-3 1-6 4-5 Alcaraz*
Alcaraz slams into the net and that gives Sinner the hold.
He's done what he had to do and forces the Spaniard to serve it out.
*Sinner 2-6 6-3 1-6 3-5 Alcaraz
Sinner, serving to stay in the final, misses a couple of first serves then overcooks the backhand to offer Alcaraz a glimmer of hope at 40-30.
*Sinner 2-6 6-3 1-6 3-5 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
Image source, Getty ImagesA very good serve from Alcaraz to start the game off. He would have loved to get the double break just to give himself some breathing space.
Sinner is looking like he is contemplating a lot between points. He has a lot to think about what he is up against tonight.
A breathtaking service game.
*Sinner 2-6 6-3 1-6 3-5 Alcaraz
Well that was just an absolute demolition job from Alcaraz. A stunning serving performance.
That has been the big different today and it gives the Spaniard the hold and puts him within one game of lifting the trophy.
Sinner 2-6 6-3 1-6 3-4 Alcaraz*
Marion Bartoli
Former Wimbledon champion on BBC Radio 5 Live
Image source, Getty ImagesThere is just too much pressure on Sinner - he cannot cope. Alcaraz makes you feel like it is possible to get a winner over him.
The execution of the racquet is just extraordinary from the Spaniard.
All Alcaraz has to do now is hold his serve - he may not even attempt to break Sinner. The cup will be his if he holds serve.
Sinner 2-6 6-3 1-6 3-4 Alcaraz*
Another ferocious forehand from Alcaraz is the only blemish on an otherwise solid service game from Sinner.
He's still in it.
*Sinner 2-6 6-3 1-6 2-4 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
Alcaraz does not suffer from too many nerves as he loves to be brave. He would rather be brave and lose the point than not be brave.
As this scoreboard gets close however, it will get his heart racing.
What a serving game from Alcaraz - three back-to-back serves is spectacular.
*Sinner 2-6 6-3 1-6 2-4 Alcaraz
Alcaraz pushes Sinner back with some crunching shots then punishes with the drop shot.
Another huge serve wraps up the hold and consolidates the break of serve.
Alcaraz is two games away from the title.
Sinner 2-6 6-3 1-6 2-3 Alcaraz*
Image source, Getty ImagesSinner gets out to 15-30 on the Alcaraz but the Spaniard responds with a 132mph serve for 30-30.
I mean what do you even do with that?
Sinner 2-6 6-3 1-6 2-3 Alcaraz*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
Image source, Getty ImagesAll the other players in men's tennis must be watching this and be terrified. No one can come close to these two.
These players can contort themselves into crazy positions. It is so reminiscent of Federer and Nadal - the spectacular display of results.
Points are being won in extraordinary ways.
Sinner 2-6 6-3 1-6 2-3 Alcaraz*
Laser focus on the face of Alcaraz as he brings up a break point and takes it in rapid time.
It's the Spaniard with the advantage in the fourth set and if Sinner can not find a response the second seed will be closing in on a second US Open title.
*Sinner 2-6 6-3 1-6 2-2 Alcaraz
I'm running out of words for some of these rallies. Shot after shot of brilliance and in the end it's Sinner's shot that drops wide on this occasion.
He recovers with a big serve before sending a forehand long for 30-30.
*Sinner 2-6 6-3 1-6 2-2 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
Image source, Getty ImagesBoth players have very traditional backhand volleys. They are able to take their left hand off the racket confidently - stunning technique from both of them.
Alcaraz getting enough first serves into play will be a big factor in this match.
Every point will increase in value now - we are in the heart of the match.
*Sinner 2-6 6-3 1-6 2-2 Alcaraz
Sinner misses the forehand through the middle of the court before Alcaraz's forehand drops long at the end of a monster rally from the baseline for 40-30.
Sinner looks to put pressure on and take the game to deuce but another massive serve hands Alcaraz the hold.
Sinner 2-6 6-3 1-6 1-1 Alcaraz*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
There is an intensity about Alcaraz. He is sniffing and smelling it. He feels like he has got the better of this match.
Impressive volleys from Sinner. Every time he is up at the net he seems to win the point.
