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US Open 2025 Day 9 recap: Naomi Osaka outclasses Coco Gauff after wins for Iga Swiatek and Felix Auger-Aliassime; Jannik Sinner overnight
The Day 9 action at the 2025 US Open kicks off at Arthur Ashe stadium from 16:30 BST as 15th seed Andrey Rublev meets 25th seed Felix Auger-Aliassime. That match is followed by the stand-out encounter of the day as former US Open champions Coco Gauff and Naomi Osaka lock horns. Over at Louis Armstrong Stadium, second seed Iga Swiatek is second up, while Jannik Sinner headlines the night session.
By Paul Hassall | Updated 01/09/2025 at 20:41 GMT+1
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20:41
JOIN US AGAIN ON DAY 10
That’s it for our live updates from Monday’s action at Flushing Meadows.
Log on early tomorrow for the latest on all of the overnight action in New York with Jannik Sinner headlining from midnight UK time.
We’ll be back from 16:00 BST on Tuesday with a focus on the first of the quarter-final action.
See you then!
20:34
OSAKA STATS
Osaka is the second player during the Open Era after Flavia Pennetta to reach her first five quarter-finals in Women’s Singles Grand Slam events on hard-court.
20:32
GAME, SET AND MATCH! - GAUFF 3-6 2-6 OSAKA
Four-time major winner Naomi Osaka continues her resurgence with a hugely impressive win over French Open champion Coco Gauff.
The Japanese star was far too consistent for the third seed as she provided a real statement of intent in her pursuit of what would be a surprise, third US Open crown.
The 23rd seed broke from deuce after hitting back from 40-15 down to seal a one-sided victory in just one hour and four minutes.
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Image credit: Getty Images
20:27
GAUFF 3-6 2-5 OSAKA
Coco darts forward to try to rush Osaka at 15-15 but the Japanese 23rd seed remains unfazed as she pulls the trigger on a backhand pass that the American just can’t reach.
Osaka continues to stay rock-solid in the rallies and another backhand into the net is followed by one that flashes a whisker wide as Naomi consolidates to 15.
20:24
BREAK! - GAUFF 3-6 2-4 OSAKA
The alarm bells are blaring for Coco.
A complete miscue coughs up two break points and it’s the third seed who blinks first in the ensuing baseline exchange with a skewed backhand into the net.
20:21
GAUFF 3-6 2-3 OSAKA
Coco wins the first point on Osaka’s serve for the first time but the intent to turn the screw doesn’t pay off.
Osaka’s serve and the plus-one power has been the trump card so far.
Gauff then looks exasperated as she drags a backhand off the island and it’s another simple hold for the loss of one point for the two-time champion.
20:19
GAUFF 3-6 2-2 OSAKA
Gauff glosses over a fourth double fault of the match to level up with a solid hold to 15.
The serve fired nicely for the most part there, but she needs to start making an impact on the return if she’s to work her ay back into it.
20:15
AROUND THE GROUNDS
Musetti 6-3 Munar
The Italian breaks twice to take control of his R4 tussle with the Spanish underdog.
20:14
GAUFF 3-6 1-2 OSAKA
Osaka wins a top-drawer 16-shot rally with a scorching crosscourt backhand and continues to look the more assured player as she rushes through another love hold to keep her nose in front.
20:11
GAUFF 3-6 1-1 OSAKA
‘Come on!’ – cries Coco.
She’s renowned for her fighting qualities and you can she’s up for it here.
Osaka can’t quite find the island with two forehand passes down the line and it allows Coco to get on the board to 15.
20:07
GAUFF 3-6 0-1 OSAKA
Frustration for Gauff.
This time she finally gets a foothold on the return, biting back from 40-0 down, but Osaka finds a clutch serve at just the right moment to fend off the in-game comeback and hold to 30.
19:59
SET! - GAUFF 3-6 OSAKA
Gauff wobbles again with a double fault and Osaka looks to take full advantage.
The Japanese star tees up two set points with a ferocious crosscourt backhand winner and doesn’t have to do anything from there as Coco double faults again at the worst possible time.
19:57
GAUFF 3-5 OSAKA
It’s been plain-sailing on serve for Naomi so far.
Another dominant hold to 15 means she’s dropped just two points on serve so far and is one game way from bagging the opener.
19:53
GAUFF 3-4 OSAKA
Gauff demonstrates the world class quality of her backhand with a delicious winner that even has Osaka applauding.
Osaka tries to press again but a near miss on a backhand up the line gives Coco the breathing space to ease through a game to 15.
19:49
GAUFF 2-4 OSAKA
Osaka zaps down her first ace of the contest and eases through another love hold as Gauff struggles to find the island.
19:45
GAUFF 2-3 OSAKA
Gauff shrugs off a double fault to open and motors into a 40-15 lead, but Osaka turns on the after-burners, leaning into a backhand down the line to force the error and make deuce.
The Japanese charges forward on to a poor dropper but fires straight at Gauff, who does just enough with the lob to earn a routine putaway.
Naomi unloads on a huge forehand up the line but it fizzes just long and Coco escapes from a tricky situation.
19:40
GAUFF 1-3 OSAKA
Too good.
This is an excellent start from the 23rd seed.
Coco brings some serious heat on the return but it arrives at 40-0 down and there’s no way back as Osaka maintains her advantage with another efficient hold.
19:35
GAUFF 1-2 OSAKA
That’s much more like it from the reigning French Open champion.
Gauff perhaps throws a bit of frustration into her delivery as she powers down a couple of aces on her way to a much more convincing love hold.
19:33
GAUFF 0-2 OSAKA
It’s a fast start from the Japanese former world number one as she consolidates with a rampant clean hold.
19:32
FAA EYES A SECOND US OPEN SEMI-FINAL APPEARANCE
The 25th seed reached the last four at Flushing Meadows back in 2021 and can return to that stage if he can continue his run of surprise wins against eighth seed Alex de Minaur.