LIVE: Jannik Sinner facing Felix Auger-Aliassime in second men's semi-final at US Open
World number one Sinner bidding for third major success of 2025
Auger-Aliassime competing in second Grand Slam semi-final of career
Winner will face Carlos Alcaraz in final after his 6-4 7-6 (7-4) 6-2 semi-final win over Novak Djokovic
World number two Alcaraz into third successive Grand Slam final
Djokovic 4-6 5-4 Alcaraz*
A rare show of frustration from Alcaraz as he kicks his towel box after just missing the forehand dropshot at the net. There's been a few of those.
Djokovic produces a big serve to hold from 0-30. Impressive stuff.
*Djokovic 4-6 4-4 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
Djokovic has gone into the corner undeneath his team and started to do lunging stretches for his hamstrings.
That is not a good sign - I haven't seen him do it this early in a match before, it's not like we are into the fifth set.
*Djokovic 4-6 4-4 Alcaraz
Goodness me. A monster 27-shot rally with insane ball-striking from both players ends with a bit of luck for Djokovic as Alcaraz's forehand clips the net and drops back on his own side of the court.
A crucial point for 15-30 with Alcaraz starting to move ahead in the game.
Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows
At the start of the second set, you couldn't help but think back to Melbourne.
Alcaraz controls the first set, then gets scrambled by Djokovic upping the intensity.
This time, though, Alcaraz recognised what was happening. He has adjusted accordingly - tactically and mentally.
*Djokovic 4-6 4-4 Alcaraz
Djokovic can't take advantage of the second serve and Alcaraz takes the hold after a little bit of a wobble.
He heads off for a quick word with his coaching box.
Djokovic 4-6 4-3 Alcaraz*
Well this looked like a smooth service game for Alcaraz but a couple of errors and suddenly Djokovic smells blood at 40-30.
Djokovic 4-6 4-3 Alcaraz*
Russell Fuller
Tennis correspondent on BBC Radio 5 Sports Extra and BBC Sounds
95 US Open wins for Novak Djokovic.
Jimmy Connors holds the men's record with 98.
He will need another US Open to try and overtake the Connors record, and this is what motivates him.
*Djokovic 4-6 4-3 Alcaraz
Both players showcasing the full repertoire here as Djokovic fires down the line to seal a hold to love before the change of ends.
Who will blink first?
*Djokovic 4-6 3-3 Alcaraz
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
That was a poor game from Djokovic. Right from the go, the nerves were jangling a little bit even if he is ahead on the score.
He kept coming forward and it felt like some of those moves forward were 'bluffs'. They haven't been convincing and Alcaraz is more than matching it. He will be releived that he is back on track.
*Djokovic 4-6 3-3 Alcaraz
Alcaraz produces that crowd-pleasing whipped forehand and that seals the hold for Alcaraz.
What a match we have on our hands now.
Djokovic 4-6 3-2 Alcaraz*
An error on the backhand side, which has been a problem for Djokovic today, hands Alcaraz the break of serve and we're back on serve in set two.
*Djokovic 4-6 3-1 Alcaraz
Goodness me. What a rally that was. Pinging back and forth at the net before an instinctual forehand whizzes past Djokovic and brings up a break-back point for the Spaniard.
*Djokovic 4-6 3-1 Alcaraz
Seven unforced errors already from Alcaraz in set two.
He moves to 15-30 on the Djokovic serve though.
Image source, Getty Images*Djokovic 4-6 3-1 Alcaraz
Image source, Getty ImagesWoah. A wild Alcaraz shot flies out of the court for 30-15.
Djokovic berates himself as a lengthy rally ends in him firing into the net.
Alcaraz wraps up the hold with a 109mph serve. The Spaniard is finally on the board in set two.
Djokovic 4-6 3-0 Alcaraz*
Night and day from the first set for Djokovic.
The crowd are well behind him now too.
Djokovic 4-6 3-0 Alcaraz*
A volley at the net and a big serve hand Djokovic a hold to love. What a start to this set for the Serb.
Three games in and Alcaraz is yet to get on the board.
Jonathan Jurejko
BBC Sport senior tennis reporter at Flushing Meadows
The bones might be aching, but the fire inside is still burning.
Djokovic roars and punches the air. He's back in this - and he knows it.
So do the crowd.
"Nole! Nole! Nole!" rings around Ashe.
*Djokovic 4-6 2-0 Alcaraz
And we have lift off!
Alcaraz fires long and Djokovic has the break of serve early in set two! Game on.
He raises a fist to his coaching box. That means a lot.
Djokovic 4-6 1-0 Alcaraz*
Well hello.
Djokovic brings up a break point. Alcaraz has only faced eight so far this tournament.
Djokovic 4-6 1-0 Alcaraz*
Annabel Croft
Former British number one on BBC Radio 5 Sports Extra and BBC Sounds
There is a bit more freedom with Djokovic in the way he has finished that game. He started to take control of the points, use the backhand down the line and came forward several times.
