WIN!! - 21-YEAR-OLD SCOT ANDY MURRAY IS INTO HIS FIRST GRAND SLAM FINAL!! Murray closes out the 6-2 7-6 4-6 6-5 over worldnumber one Rafael Nadal in three hours and 30 minutes with an astounding backhand pass up the line after easily reaching the Rafael Nadal drop shot. Amazing. Murray will play four-time defending champion Roger Federer in the final, and he might just be the favourite on this form.

40-40 - These baseline rallies are truly befitting the talents of both men, as both men give it everything but Murray comes out on top with a fantastic cross-court forehand. Back to DEUCE, and Murray now two points away again!

30-30 - Nadal gets his own net cord, but the big bounce allows Murray to whip the forehand winner right past the Spaniard. Andy Murray is two points away from his first Grand Slam final.

15-15 - Murray gets nicely lucky as his cross-court backhand hits the top of the tape and just lands inside the tramlines and on his opponent's court. Nadal gets back to 15-15 with the service winner.

4-4 - Another enormously gutsy hold from the world number one, who begins to play more patiently forcing his rival into key mistakes. Murray is now 3-of-19 on BREAK POINTS. On serve in this fourth set. We would like to think Andy Murray still has the edge against the five-time Grand Slam champion.

30-40 - Nadal shanks the forehand after the 17-stroke baseline rally!!! BREAK POINT....

3-4 - Murray hits a horrid drop-shot to allow Nadal to whip the massive backhand up the line.... But Murray lunges his racket to the ground to make an amazing backhand half-volley!! What a shot, and it's a worthy winner that earns the quick and painless hold to LOVE!! We were questioning Andy Murray's maturity a moment ago, but we apologise to him now. The emotion seems to be fuelling the Scot at this point.

40-AD - A great defensive forehand reach from Murray causes Nadal to send the sloppy volley error into the net and earns the Briton yet another BREAK POINT!!

30-30 - Murray really losing his cool, and letting fly with the obscenities. Despite only 22, Nadal is so mature and he will almost certainly take cold-hearted advantage of any mental slips from any of his opponents. Murray finds some energy from that anger though, and wins a couple of very aggressive points to get to 30-30.

3-1 - Rafa hits his seventh ace to get to Ad In, and closes out the hold when the now error-prone Brit fires another forehand into the net.

0-30 - Nadal starts off with a double fault to offer Murray some hope.... Followed by a slip and a forehand into the net to offer him some more hope....

40-0 - Again Nadal goes up 30-0 on the Briton's serve, and Murray is starting to look tired as he whips the unforced forehand error into the net to gift Nadal a TRIPLE BREAK POINT!! Shouts of "Come on Andy!" rain down from the stands....

40-40 - A stunning cross-court backhand return of serve from well behind the baseline saves gets Murray back to DEUCE yet again!! He knows this game will probably be his best chance to grab a stranglehold on the match.

40-40 - A huge forehand down the line sets up another massive forehand up the other line and yet another BREAK POINT chance!! Judy Murray explodes in the player's box.... Nadal saves BREAK POINT number seven with a 124mph ace down the T! This just keeps getting better and better. 16 points in this game alone. Nearly half have been BREAK POINTS. DEUCE.

40-40 - Another grinding baseline rally, and another Nadal error lets Murray get yet a fifth BREAK POINT chance! The Briton completely dictated that 15-stroke rally, as he has most of these points tonight..... Wow! Nadal again saves, with a brilliant serve-and-volley play, concluded with a lunging second-volley winner in the open court after Murray did brilliantly to run all the way across the court to return the first-volley with his forehand.

40-AD - Murray earns BREAK POINT number four....

40-40 - Saved! Service winner out wide. DEUCE. Murray still hasn't broken the Spaniard since the first set, having won that second in a tie-break.

15-40 - It's now Murray who goes up 30-0 on the Spaniard's serve.... And despite reaching a near-impossible drop shot, the Briton loses the point as Nadal just flicks back the forehand winner in the open court. 15-30.... Oh dear! Nadal is in control of the point, but he folds under the pressure and sends a horribly shanked forehand wide! DOUBLE BREAK POINT....

40-40 - Nadal takes the first two points from Murray to put the 21-year-old under some real pressure.... Murray hits a fantastic forehand into the corner to get back to 30-30 though as he had to hit that shot perfectly to beat Nadal and did..... But he gifts away the BREAK POINT chance anyways by hitting his third double fault of the match!! Murray fires his 20th ace, though, to save! DEUCE.

AD-40 - Nadal pounds his chest after brilliantly booking a second SET POINT with a massive forehand out wide that sets up the easy forehand winner up the line near the net.

40-AD - And Nadal shanks the forehand error well wide!! Murray has BREAK BACK POINT!!!

30-30 - Murray creams a meek second serve to set up a powerful backhand approach and get to 15-15. But the Brit misses a real chance on the next point, sending the forehand drop shot into the net. Murray is definitely the aggressor, and thanks to a strong baseline point he eventually presses the Spaniard into the error....

5-3 - Nadal is looking much sharper than he did yesterday. Despite some astounding defence by Murray, Rafa is able to win his seventh straight on point on serve since coming back today. The Spaniard wraps up the hold to 15 with a service winner and the shot of "VAMOS!" Nadal is one game away from collecting his first set.

4-2 - Rafa opens up in some style with a blazing forehand winner up the line. He then closes out the hold to LOVE with an equally authoritative inside-out forehand winner. An imposing start, and Nadal could rush through this set if Murray's not careful.

21:35 - American Steve Ullrich is the chair umpire today. The illustrious Sean Fay has noted that the man has an unusually large microphone. We'll see if that comes into play today.

21:25 - It's difficult to say who this 24 hour delay will benefit, as Nadal was losing when time was called, but we were speaking with Simon Reed earlier and the British Eurosport commentator said he believed that Murray would gain the most from the break. The reasoning being that the young Scot would have really struggled if he would have been forced to play a five-set four-hour plus slog against the great grinder Rafa Nadal.

----- - Welcome back to our LIVE coverage of this semi-final between British number one Andy Murray and world number one Rafael Nadal. The sixth seeded Murray was leading this match 6-2 7-6 2-3, though he was down a break in the third set, when this match was delayed yesterday.

20:35 - That analysis does actually match up slightly with what Mats Wilander told us the other night in response to a reader question: "I think the emotion Federer felt winning gold in the Olympics has taken him to a different level, because I've never seen him as pumped up as he is at this year's US Open. He has allowed himself to be more emotional on court and not just play tennis as a physical game. It matters to his opponents when he shows emotions, because it takes away something from opponents and makes them think about things."

20:20 - If this rain settles in for the remainder of the evening, as it is expected to do, then the Murray v Nadal semi-final will be concluded on Arthur Ashe at 16:00 local time (21:00 BST) tomorrow and followed immediately by the women's final between Serena Williams and Jelena Jankovic, which had been scheduled to take place later tonight. The men's final would then be moved to Monday at 17:00 local time (midnight BST). We'll keep you posted if we hear anything official about the schedule.

20:00 - Just to keep you updated as to how the weather's going now, the sky is very dark, and Louis Armstrong Stadium is all-but empty. Welcome Hanna (and I ain't talking about Montana).

19:41 - Oh no! It looks like the remains of Hurricane Hanna have finally arrived at Flushing Meadows at 14:41 local time! The two men are going to wait on the side of the court to see if play will be called, which I'm sure it will. Once this storm starts, it's not expected to start for quite some time.

30-30 - "VAMOS!" Rafa sees a mental lapse, and as Murray hits his seventh unforced error of this set, the match enters its second hour and Nadal goes up 30-0 on his rival's serve..... Murray gets back to 30-30, however, with a great defensive backhand. The line was there for the taking for Rafa, but he sent it wide.

2-1 - Murray breezes through the hold to 15 with an ace and a service winner. Nadal still has that break lead though.

1-0 - Murray hits his first lull of the match, handing Nadal a DOUBLE BREAK POINT, his first of the match, with a backhand error wide. And Rafa confirms with the huge return-of-serve that forces Murray long!! "VAMOS!!" shouts the Mallorcan superstar.

TB5-6 - What drama! Nadal is tricked by the kick-serve and his forehand return hits the top of the tape, and just bounces onto his own side!! Murray then comes up with the service winner to get to SET POINT....

TB3-3 - And Murray hits his first double!! At the change of ends the tie-break is back on serve.

TB1-2 - Murray opens up with a mini-break with a very aggressive point. Nadal claims it right back, however, with a scorching forehand winner after the deep return into the corner. And Muzza comes up with the ace down the T at 130MPH to keep the breaker on serve.

6-5 - Another epic game is ended with a Nadal ace. Two more break points for Murray in that game and both points developed into long rallies and Nadal really had to play some superb tennis to win both points. You have to hand it to the Spaniard, he has really dug deep in this set despite being on the backfoot and now Murray will need a tie-break if he is to take the set.

5-4 - Yet again it is not easy for Nadal as he has to come back from 0-30 down and also survive a deuce before taking the game. But this is the worrying thing for Murray - he has been so dominant but if he doesn't win this next game then they will be all square at a set each.

4-3 - Almost a look of resignation from Nadal as Murray fizzes another winner past him to start the game. However, this was one of the easier holds for him - he takes the game to 15.

3-2 - Nadal has to come to the net to win a few points as he again is forced to really scramble to hold. Murray had yet another two break points in that game and on the second one he looked as if he might take it but his sliced drop shot wasn't quite subtle enough. Still some more cracking winners in that game.

2-1 - Nadal saves THREE break points before digging out a hold as Murray continues to look the more dangerous player. The Scot probably just a little too aggressive on the break points as he looked for that elusive winner, but you can't really criticise his tactics thus far.

1-0 - Nadal produces three big serves in a row to get him out of a little 15-30 hole and take the first game of the second set.

2-5 - MURRAY BREAKS AGAIN: From 40-30 down he then follows a superb backhand cross court winner with a forehand bullet down the line. That brings up break point and Nadal tries a little drop slice from near the net but the Scot races to the ball just in time and guides a winner down the court. What a performance so far from Murray.

2-3 - Nadal holds but only after having been brought to deuce by Murray once again. Excellent returning for the Scot; he is really looking to fire his baseline shots deep so as to not let Nadal find any rhythm. However, Nadal got the upperhand in a few points in that last game by finding some quality range himself with his forehand.

1-2 - BREAK MURRAY: Murray adopts a more patient attitude in the third game with the odd change up here and there and it quickly earns him two break points. He only needs one though as another fine deep ground stroke leads Nadal to scooping a shot long. Murray hitting the ball as sweet as a nut so far while Nadal is still feeling himself into things. Promising for the Scot.

1-0 - Very aggressive start from Murray against the Nadal serve and it helps him take 0-15 and 15-30 leads but then Nadal edges a long, powerful rally by crushing a winner home from the middle of the court. The Spaniard then seals the game with an ace. Still, encouraging signs from Murray.

0-0 - Players out on court now having their warm-up. Nadal leads the head-to-head 5-0 including straight set wins in Toronto and Wimbledon already this year.

- - Welcome to Louis Armstrong court for this second semi-final between Rafael Nadal and Andy Murray. Not where we expected to be this Super Saturday but this match has been moved due to the forecasted rain for later.