Spain's Rafael Nadal through to US Open final
Top seed beats Argentina's Juan Martin del Potro 4-6 6-0 6-3 6-2
Nadal to bid for third US Open and 16th major title on Sunday
South Africa's Kevin Anderson books place in first Grand Slam final
Anderson beats Spain's Pablo Carreno Busta 4-6 7-5 6-3 6-4
Jamie Murray & Martina Hingis reach mixed doubles final
Russell Fuller
BBC tennis correspondent at Flushing Meadows
I think this is going to be special atmosphere. If you listen to Juan Martin Del Potro, there's not much point in staying up. He'll say 'we all know Rafa is the clear favourite, but I'll just remind you this is my favourite court in the world'.
Image source, Getty Images
Image source, Getty ImagesWith all the lights and music, Tiger Woods probably thought he had sniffed out a Vegas nightspot.
Better than that. He has a prime seat for a heavyweight contest worthy of the Strip's famous nights.
Nadal v Del Potro
Juan Martin del Potro might be on light end of the head-to-head scoreline, but he has taken the last two meetings with Rafael Nadal - in the semi-finals of the Rio Olympics and in the 2013 Shanghai Masters.
Piers Newbery
BBC Sport at Flushing Meadows
The Argentine fans have been out in force all afternoon, putting on a show for the rather bemused locals. Football chants are something of a mystery here, although I think everyone is pretty familar with "Ole, ole, ole, ole... Delpo, Delpooo" by now. There are Argentina shirts everywhere, one nice lady asking if they were "soccer uniforms". She had actually picked out a Pumas rugby shirt, but it didn't seem the time to quibble. The Delpo fans will still be outnumbered among the 23,000 spectators, but rest assured you will hear them on the upper deck.
Image source, BBC Sport#bbctennis
Akinpelu Kayode: I'm wondering whether the roar from the crowd is really because of what they've just watched or what they are about to watch.
Image source, Getty ImagesNot before a bit of patriotic warbling though.
To fill the changeover a young man has just stepped up to the microphone to bash out a vibrato version of American the Beautiful.
"From sea to shining seeeeeeeeeeeea!"
Somewhere in the depths of Arthur Ashe, Rafael Nadal and Juan Matin del Potro are stretching off and warming up.
This is one happy Grand Slam finalist.
But who will Kevin Anderson face in biggest match of his career?
It's almost time for Rafael Nadal v Juan Martin Del Potro.
Image source, Getty ImagesAnderson 6-4 5-7 6-3 6-4 Carreno Busta
Russell Fuller
BBC tennis correspondent at Flushing Meadows
He will be second favourite in the final but Kevin Anderson, with that serve and that game, is well placed to take advantage if whoever opposite is not at the top of their game.
Anderson 6-4 5-7 6-3 6-4 Carreno Busta
Jill Craybas
Former world number 39 on BBC Radio 5 live sports extra
I think Kevin wants to enjoy this moment first before thinking about the final. He will come out firing for that on Sunday, but he doesn't want to put too much pressure on himself.
Image source, Getty ImagesAnderson 6-4 5-7 6-3 6-4 Carreno Busta
Kevin Anderson speaking on court: "I really don't know what to say. There was so much support, these Grand Slams are tough, we are playing with some of the best players in history and it is nice that they gave us a run. It was an unbelievably tough match on one of the biggest stages in tennis. My emotion at the end kind of summed it up.
"At the end of last year I was told I would probably need surgery on my hip. It was very hard. Nine months later this means the absolute world to me."
Image source, Getty ImagesAnderson 4-6 7-5 6-3 6-4 Carreno Busta
Kevin Anderson decides he's going to do a Pat Cash and climb up into the coaches' box to celebrate.
Dude. Don't peak too soon.
Anderson 4-6 7-5 6-3 6-4 Carreno Busta
Carreno Busta nets!
Kevin Anderson is a Grand Slam finalist for the first time!
Image source, Getty ImagesAnderson 4-6 7-5 6-3 5-4 Carreno Busta*
Pablo Carreno Busta is fighting back. He couldn't, could he?
A panicking Anderson lands a drop shot which is just on the line. It was so close to being out. But it's 30-30.
A massive smash brings up match point.
Anderson 4-6 7-5 6-3 5-4 Carreno Busta*
Kevin Anderson gets ready to serve for a place in his first ever Grand Slam final.
No pressure.
The first point is RIDICULOUS! That's 38 shots! My word. It all comes to an end when Anderson hits wide.
The South African gets off the mark as Carreno Busta dumps a backhand into the net.
Another epic rally ensues and again Anderson misplaces his final shot. 15-30.
DRAMA.
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*Anderson 4-6 7-5 6-3 5-4 Carreno Busta
Jill Craybas
Former world number 39 on BBC Radio 5 live sports extra
Kevin Anderson does not have to think about it too much. Just concentrate on landing that first serve. He has been holding pretty easily in this set. The same again will be good enough.
*Anderson 4-6 7-5 6-3 5-4 Carreno Busta
Anderson lobs Carreno Busta. It's travelling, it's travelling, it's travelling. It's out! Anderson challenges but it's no good.
After deuce four, Carreno Busta opts for a hotdog. The shot type, not the sausage type. What a time to bring that trickshot out!
Finally, after five deuces, the Spaniard prevails and holds.
Kevin Anderson remains a game away from the final.
Catch Anderson if you can, Carreno Busta.
Image source, EPA*Anderson 4-6 7-5 6-3 5-3 Carreno Busta
15-0.
30-0.
40-0.
Pablo Carreno Busta's going full pelt.
Hold on a sec...the South African has clawed his way back to 40-30. And now deuce.
Carreno Busta lashes an approach shot home for the advantage but then shoots long.
We're all square again for a second deuce.
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Akinpelu Kayode: The ace ratio says it all.
Image source, Getty Images