Rafael Nadal beats Marin Cilic 6-3 3-6 6-1 6-2 on Arthur Ashe Stadium
US Open last 16 at Flushing Meadows, New York
Belinda Bencic defeats Naomi Osaka 7-5 6-4 to reach last eight
Osaka will lose world number one ranking to Ashleigh Barty
Diego Schwartzman defeats Alexander Zverev 3-6 6-2 6-4 6-3
That's all for now. Time for bed. It's a big day later on as Johanna Konta is first up at 17:00 BST as she aims to reach the women's semi-finals.
Hope you can join us for that one. Thanks for joining us tonight and see you this afternoon.
Cilic 3-6 6-3 1-6 2-6 Nadal
Jonathan Jurejko
BBC Sport at Flushing Meadows
Image source, Getty ImagesSpanish second seed Rafael Nadal responded to the challenge thrown down by 2014 champion Marin Cilic as he battled to reach the US Open quarter-finals with a four-set win.
Nadal, 33, ultimately had too much quality for the Croatian 22nd seed in a 6-3 3-6 6-1 6-2 victory in New York.
Cilic, 30, briefly rediscovered his best form to level before wilting.
Nadal, the 18-time Grand Slam champion, will play Argentine 20th seed Diego Schwartzman in the last eight.
Cilic 3-6 6-3 1-6 2-6 Nadal
Rafael Nadal is asked what keeps his motivation for tennis alive. He says: "Moments like tonight. To play here, playing in an amazing stadium, the energy I receive from you guys brings me to the next step.
"The emotions I have when I play here are impossible to describe. I love the sport and feel very lucky to still be playing tennis here. Eight years ago I didn't think that would happen as my body was suffering badly."
Cilic 3-6 6-3 1-6 2-6 Nadal
Some quotes from our winner Rafael Nadal: "For some moments in the second set I felt there were too many points in his hands, he was pushing me back, more aggression than me and he hit every ball very strong. After that second set I thought something needs to change or I would be in his hands. I started to return the second serve inside the court and that created a different perspective."
On quarter-final opponent Diego Schwartzman: "He is playing amazing, nothing new, he is one of the players with best talent on tour. It will be a big challenge, I have to play my best, I'm happy for him, he's a close friend and I hope to play a great match."
On Tiger Woods being in the stands: "Tiger doesn't need any advice from me, for me it's a huge honour playing in front of all of you and playing in front of Tiger is a very special thing. I always say I don't have big idols but one idol is him and I always try to follow him.
"It's a big pleasure to have him here, he's one of the greats of sport and I want to congratulate him on one of the most amazing comebacks in sport, winning the Masters this year. It is much better if Tiger does not see my (golf) swing, maybe he would lose a bit of rhythm after that."
Cilic 3-6 6-3 1-6 2-6 Nadal
Nadal marches on in such impressive style. A sweeping forehand followed by a huge scream of delight. Cilic put up a brave fight in the opening two sets before being swept aside in the next two.
Diego Schwartzman, the 20th seed, is the man who somehow has to try and stop Nadal next up.
Cilic 3-6 6-3 1-6 2-5 Nadal*
Two more points will do it.
Make that one, with some absolute brilliance from Nadal, who somehow chases down what looked a lost cause and he flicks it home for a winner and a match point.
Cilic 3-6 6-3 1-6 2-5 Nadal*
Image source, Getty ImagesBuilt like a boxer, it's been a heavyweight performance from Rafael Nadal, who has landed some heavy blows tonight with Cilic one game away from being knocked out.
Cilic 3-6 6-3 1-6 2-5 Nadal*
Cilic can just hold his serve and hope. Nadal to serve for the match.
*Cilic 3-6 6-3 1-6 1-5 Nadal
Nadal has just been too good tonight. The hope of a Federer-Nadal final is still very much on. Nadal one game from the quarter-finals. Cilic has just been blown away in these past two sets.
Cilic 3-6 6-3 1-6 1-4 Nadal*
Cilic avoids the humiliation of a fourth set bagel. But he's still two breaks down and facing elimination.
Naomi Osaka's time as US Open champion has ended and she will also lose the world number one spot after going out in the last 16 today.
She has just posted this on Twitter...
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*Cilic 3-6 6-3 1-6 0-4 Nadal
The Spaniard saves a break point to move to 4-0. Two games from the quarter-finals.
In the last two sets, Cilic has won one game, compared to 10 from the world number two.
Cilic 3-6 6-3 1-6 0-3 Nadal*
A two-handed backhand down the line is perfect and that sees off the break-point opportunity.
Cilic 3-6 6-3 1-6 0-3 Nadal*
Break point chance for Cilic after a backhand slice from Nadal hits the top of the net. The Croat desperately needs this one.
Cilic 3-6 6-3 1-6 0-3 Nadal*
Tiger Woods is happy now. His man is seemingly heading into the quarter-finals. The Spaniard is crushing the Croat's spirit with just a relentless, brutal display of hitting. Nadal with a 3-0 lead, halfway to the fourth set which would equal victory.
*Cilic 3-6 6-3 1-6 0-2 Nadal
A forehand into the net again leaves Cilic in trouble.
*Cilic 3-6 6-3 1-6 0-2 Nadal
Cilic is hanging on, saving two break points. If he was to go a double break down it would be curtains for him.
*Cilic 3-6 6-3 1-6 0-2 Nadal
Two break points for Nadal for 3-0.
*Cilic 3-6 6-3 1-6 0-2 Nadal
Nadal two up, four service holds from the quarter-finals. Anyway back for Cilic?
*Cilic 3-6 6-3 1-6 0-1 Nadal
Jonathan Jurejko
BBC Sport at Flushing Meadows
"Come on champ!! Keep your head up! Let's go!"
Rather like Paulie to Rocky Balboa, minus the towel draped over his shoulder, one bloke in the crowd tries to gee up Cilic like he is stood in his corner.
