Andy Murray's next opponent is Germany's Matthias Bachinger, who surprisingly beat Radek Stepanek 6-3 6-2 6-2. The 6ft 2in right-hander is playing just his second US Open but didn't let inexperience hinder him against the veteran Czech.
Murray and Bachinger will take to the court on Wednesday. It's time for us to end this live text commentary, let the world's best tennis players play in peace. Thanks, as always, for your contributions. Until tomorrow...
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One Briton departs and another appears. Johanna Konta is about to start her first-round match with Israel's Shahar Peer on Court 11.
The pair had to wait a while as Julien Benneteau's tie with compatriot Benoit Paire turned into a five-setter. The unseeded Paire was a 7-6 (7-4) 5-7 6-4 4-6 6-4 winner.
On Arthur Ashe, Venus Williams has failed to serve out for the match, which gives Kimiko Date-Kruum hope at 5-3 in the third.
Match stats
Murray 6-3 7-6 (8-6) 1-6 7-5 Haase
The serve was a problem for Murray as cramp set in during the third set. He won 60% of points on his first serve and 51% on his second serve - averaging 100mph and 82mph on his first and second serve respectively.
"I can't really remember anybody else being affected by injury like that. What is it down to? There's no question mark about his fitness, it was hugely surprising. It leads you to believe tension played a part but we will hopefully get some answers from Murray but it's even harder to be optimistic about his chances after that first round match."
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"We have to compliment Andy Murray, he didn't moan and groan, he didn't make excuses but let's also say the mind of Haase was disturbed. He thought he had the match but he fell apart mentally."
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Murray and Haase embrace at the net, with the Scot apologising to his opponent about his injury.
"My quads were cramping and I started to get it in my forearms," Murray tells Sky Sports.
"I didn't know what to do, whether to conserve energy or try to finish it in three sets. I just tried to play without using my legs much. These Slams are physically challenging, I need to work out why that happened today because it shouldn't happen after an hour and 45 minutes, even though it was hot."
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David Law
BBC Radio 5 live sports extra commentator
"I think a lot of tennis players would have said it was an injury and got a trainer on but Andy Murray is a fair player and he knows cramp is not an injury."
Game, set and match
Murray 6-3 7-6 (8-6) 1-6 7-5 Haase
"Make my day," says Haase as he superbly returns to draw level at 30-30, twirling his pistol in his hand, chewing on a toothpick. Murray thought he had done the hard part, breaking Haase in the previous game, but he must now prepare for another showdown. Murray saves two break points - Haase netting a thunderous Murray forehand for deuce.
A third break point to Haase... Murray stretching the left shoulder before launching the second serve.... and it's a clean winner from Murray! Deuce! And minutes after we were preparing to talk about the Scot's demise, Murray has match point and victory is his when a Haase forehand dribbles towards the net.
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*Murray 6-3 7-6 (8-6) 1-6 6-5 Haase
Haase performing like a man who thought he had killed off his enemy with one debilitating punch after another, only to see him crawl back while his back was turned. Murray wiping the spittle away with the back of his hand and begging for more. The Scot collects two break points, wastes one but grabs the second with a wonderful return. "Is that all you've got, punk," Murray says. (He doesn't, but you get my drift).
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"This is a ridiculously topsy-turvey set."
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Max Beech: Win or lose this match - Murray needs more matches and more time to recover. This is not Mauresmo.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"The mind of Haase is bewildered. He doesn't know what to make of this."
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Murray 6-3 7-6 (8-6) 1-6 5-5 Haase
An 83mph second serve from Murray is good enough to outwit Haase for the opening point. The Scot dragging Haase from tramline to tramline and, without having to move from the middle of the baseline, the Brit passes teh Dutchman with a canny forehand. An improbably 40-0 lead for the Scot, though Haase is back in contention at 40-30 - a 75mph second serve perhaps a touch optimistic from Murray. He comes through the test though and Murray, the great thinker, is back from the brink.
Murray breaks
Murray 6-3 7-6 (8-6) 1-6 4-5 Haase*
An ace takes Haase to 30-30, but Murray digs deep into his reserves of energy. The fuel gauge might be low but the Scotsman can still produce a dazzling winner into the corner. What? A double faults? Haase double fault and Murray's alive! He's alive!
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Alex Hunter: Feel very sorry for Andy here - his anticipation and movement are such big weapons and he's hobbling at 50% and can barely serve
Haase breaks
Murray 6-3 7-6 (8-6) 1-6 3-5 Haase*
These two opponents performing like out-of-condition old-time heavyweights. The pace has been slowed down, they're slugging it out with one hopeful hit after another. It's painful to watch. Everything happening as if it were in slow-motion. Pride is preventing them from crumbling. But Haase is the stronger of the two and Murray squanders an opportunity to level. It's the Dutchman who will serve for the set.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Sometimes tension can make you freeze up as well, you lose flexibility. I don't believe it's the weather. He says he is in the best shape he has ever been in. He is smiling out there, who knows, maybe he is being coy? Andy is almost like a poker player out there."
Murray breaks
*Murray 6-3 7-6 (8-6) 1-6 3-4 Haase
A series of errors from Haase - a double fault, an overcooked overhead -and Murray is gifted a break point. "Come on, Andy," yells a fan as if he were hailing a cab. The Dutchman unaffected - a forehand winner for deuce. But Murray gets a second chance - second break point if you wish - but pushes his crosscourt volley wide.
A monstrous winning return from Murray, but the wincing former US Open champion immediately grabs his quad and then stretches his shoulder. Murray out of sorts but has enough to win this game on one leg.
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Murray 6-3 7-6 (8-6) 1-6 2-4 Haase*
Murray's feet planted onto the court as he serves, but he comes through to hold in what is a subdued atmosphere on Louis Armstrong.
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"Maybe Murray feels if he can get through this set things might start to loosen up. But he's not making any height with his serve."
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Frank Meehan: Andy had his magic season. Now it's time to retire to the commentary box. The new guys have got his measure now.
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*Murray 6-3 7-6 (8-6) 1-6 1-4 Haase
Haase suffers a tweak or a strain and calls for the trainer. Muscles tightening in the heat. Murray dashes to the net, but he fails to intimidate his opponent and the yellow ball whizzes by. The Scot then nets and it's game over.
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Charlie Clinton: What is Murray doing?! 1st serves at 80mph, demanding ice, no energy... and no trainer....?
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Murray 6-3 7-6 (8-6) 1-6 1-3 Haase*
Murray wins a game! He wins a game! Murray's serves have slowed to mobility-scooter pace, hovering around the 115mph-mark, but that is quick enough to get the better of Haase in this game.
Elsewhere, Ireland's James McGee takes the first set 6-4 against Aleksandr Nedovyesov.
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*Murray 6-3 7-6 (8-6) 1-6 0-3 Haase
The pendulum swung in Haase's favour some time ago and the Dutchman firing across aces which Murray cannot respond to. The world number 70 wins his ninth consecutive game and at the changeover Murray places a towel over his face.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"My assessment is Murray is not right physically. If he loses this game here it is going to be very, very serious. I am surprised he hasn't called for the trainer though."
Haase breaks
Murray 6-3 7-6 (8-6) 1-6 0-2 Haase*
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Murray loses the opening two points but somehow, in spite of his feeble serves, the Scot levels at 30-30 before nudging ahead thanks to a deep volley from the net. Haase punishing the Murray serve, given oodles of time to produce a bullet of a return. Break point. Murray crumbling. Physically he's not right. The Brit is suffering.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"There is something wrong here. Murray's first service game will tell us a lot."
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*Murray 6-3 7-6 (8-6) 1-6 0-1 Haase
Murray was rubbing his right quad during the changeover and placing a bag of ice on his overheated legs and neck, but the trainer did not appear. Will Haase take heart from seeing his opponent wounded? Two aces on the trot - his 10th and 11th of the match - eases the Dutchman to 40-15, but Murray responds with a nonchalant drop volley at the net. The Scot opts to come forward once again, but this time he's beaten by a Haase forehand winner.
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"Andy Murray is trying to find ice but they haven't got any and you could hear him say he needs it now. There's definitely something wrong there."
Game and third set
Murray 6-3 7-6 (8-6) 1-6 Haase*
A change of shirt for Murray but not a change of fortune as the white-shirted Scot tamely allows the Dutchman to win the set. Murray stretching during the changeover. All is not right in Murray's world and now he's gesticulating to the umpire.
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*Murray 6-3 7-6 (8-6) 1-5 Haase
Murray recently let winning positions slip when losing to Jo-Wilfried Tsonga and Roger Federer but Haase is no Tsonga, and he's certainly no Federer. Murray, though, seems to have waved the white flag for this set and the Dutchman holds to 15.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"It looks like something's wrong with Andy. There's no energy at all."
Haase breaks
Murray 6-3 7-6 (8-6) 1-4 Haase*
Murray collects two points easily, but is reined in to 30-30 as Murray, in no man's land, is caught looking statuesque at the net. The Scot far from his best, but hangs on to save a break point.
But he is quickly on the ropes again, screwing a backhand wide to gift Haase a second break point and the sun seems to have sapped Murray's energy. The Scot offers no resistance and Haase takes charge of this set.
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*Murray 6-3 7-6 (8-6) 1-3 Haase
An elderly gentleman slowly makes his way up the vertigo-inducing steps before the start of this third game. He needs to up his tempo if he is to take his seat before Haase launches his crackerjack serves towards Murray. The Scot needs to up the ante, too, and he does so by dragging the game to deuce.
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Haase goes long to present Murray with a break point but the 2013 Wimbledon champion carelessly allows his opponent to wriggle off the hook.
A turbo-charged second serve from Haase for deuce and Murray can do little but to net his forehand return on the follow-up.
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David Law
BBC Radio 5 live sports extra commentator
"There are tennis players in this draw who will look at the way Andy Murray is hitting his second serve and think, 'I'll lap that up no problem.' I'm almost wondering if there's something wrong with him. He needs to figure out a way to get the rhythm going."
Haase breaks
Murray 6-3 7-6 (8-6) 1-2 Haase*
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Murray sweating like a racehorse as the rallies lengthen. The Scot faltering again when ahead, and Haase squanders a fine opportunity at break point. Cool and crisp from Haase from the baseline, sending Murray back and forth, before earning a second break point thanks to a well-worked forehand winner.
Opportunities come. Opportunities go. Advantage. Deuce. Murray instinctively touches his ribs as he watches a Haase winner fly by for deuce. Third break point Haase. Murray wrong-foots his rival with a deep volley from the net.
Fourth break point. Oof! Haase wouldn't have reached that Murray backhand had he started chasing yesterday. Deuce. Fifth break point. Murray wide. Murray broken.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"It's awfully tough to win a Grand Slam playing eight feet behind the baseline. David Ferrer is the perfect example - he does an awful lot, but it's very hard for him to win a Grand Slam."
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*Murray 6-3 7-6 (8-6) 1-1 Haase
At deuce, Murray is a fraction wide with a backhand across court, which allows Haase to breathe a little easier and Haase holds firm to level. Both players toiling in the heat.
In other news, Kimiko Date-Krumm is 4-1 up against 19th seed Venus Williams in the first set, while Jo-Wilfried Tsonga leads Juan Monaco 4-1 in their first-round tussle.
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John McEnerney: "Murray needs real full shot workouts in these early rounds, he's a tad match rusty like Djokovic but unlike Federer, 3 finals on the bounce!"
Andrew Priestley: "Haase testing and pushing Andy Murray hard in this first-round match is not a bad thing, it'll help prepare him for next week."
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Murray 6-3 7-6 (8-6) 1-0 Haase*
A display of floating tennis balls...
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Has anyone seen any gravity-defying tennis balls? Anyone? As if the players didn't bamboozle us enough on the court, there seem to be tennis balls at Flushing Meadows which can float without any assistance. It's true. It could be art. It could be magic. It could be both.
Back on the court, Murray has been reined in from 40-15 to deuce and the Scot's shoulders slump a little lower with every point conceded. The two-time Grand Slam champion saves break point - and comes through an iffy service game as Haase plonks a backhand into the tape.
Latest results
Second seed Simona Halep is through after fighting back to defeat Danielle Rose Collins of the US, 6-7 (2-7) 6-1 6-2
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And sixth seed Angelique Kerber of Germany also advances after beating Ksenia Pervak of Russia 6-2 3-6 7-5.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Andy Murray is not playing like Andy Murray. That was a five out of 10 set."
Game and second set
Murray 6-3 7-6 (8-6) Haase
Haase closes the gap. From 4-2 to 5-4 and questions are being asked of a wincing Murray. But Haase goes long to present the Scot with two set points - but Murray is hauled in once more and the Scot embarks on a monologue. A swing of the hips from Haase, a forehand down the line and the Dutchman roars - it's 6-6, Murray slaps his racquet on the hard court and the boisterous crowd sing "let's go, Robin".
A hush as Haase prepares to serve for the set... The Dutchman grunts and groans... Murray gambles like a high-roller and the reward is big - HawkEye shows the Scot kissed the line for set point. What has Haase got left? The crowd want more but he goes long on the forehand and Murray goes two sets up.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
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"The big server is negated a little bit in the tie-breaker."
Robin Haase has won just two of the 14 tie-breaks he has played this year.
Tie-break
Murray 6-3 6-6 Haase
Bravo! Some wizardry from Murray as he beats Haase with a razzle-dazzle of a forehand. A celebratory fist-pump to boot as he levels at 1-1. Perhaps Murray's brilliance has intimidated his opponent because Haase timidly nets for 3-1 and is then undone by another jaw-droppingly good Murray winner. Murray leading 4-1, though Haase bites back and it's 4-2 at the changeover.
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Murray 6-3 6-6 Haase*
At 30-15 Murray is cruising on a street named easy and Haase isn't able to sow any seeds of doubt - slashing wide on the return for 40-15 and mucking up a volley to end the contest. Tie-break? You got it.
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"That was a near-perfect service game from the Dutchman. You don't get too much emotion from Robin Haase, he's a placid fellow."
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*Murray 6-3 5-6 Haase
Pressure? Nah, not for Haase. A blemish-free hold for the underdog, who has performed admirably after an iffy start to the first set. If Murray is to win this match in straight sets he must at least take this one into a tie-break.
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Murray 6-3 5-5 Haase*
One hour and 19 minutes into the match and Murray serving to stay in the set. The former US Open champion is passed on his forehand as Haase levels at 30-30. An ace settles the nerves and Haase screws a forehand wide to gift Murray a point and the game. Tables turn. Some old-fashioned Grand-Slam pressure heaped onto Hasse's shoulders.
American number 7 Bradley Klahn on Twitter: It's like Christmas morning, but 10x better. Gameday baby!!!
Klahn takes on Russia's Andrey Kuznetsov later today.
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*Murray 6-3 4-5 Haase
Excitable whoops from spectators on Louis Armstrong as Haase gets the better of Murray with a delicious drop shot. The Dutchman cruising at 30-0, but Murray makes life uncomfortable by sprinting to the net like a panther to nick a point.
At 40-15, Murray, with nothing to lose, works Haase from side to side and is rewarded as Haase lazily goes long. Errors creeping into Haase's game... blips on the forehand. Murray with a break point... But a sweetly-struck crosscourt forehand gets Haase out of danger and he wriggles free, and to within a game of the set.
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Murray 6-3 4-4 Haase*
Murray's shoelaces become untied between the first and second serve and the loss in concentration results in a double fault for 15-15. Murray misfiring - a second double fault - and Haase has a sniff at 15-30.
"Come on, Andy," shouts a New Yorker. and the Scot listens, aiming a backhand volley at Haase's feet and the Dutchman is made to look as if he has cement in his trainers.
Haase, though, forces the game to deuce but a series of errors lets Murray off the hook and we're even stevens.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"This match is very important for Andy. The serve is key for him to come through this. He's just not the same Andy out here as he was when he was in top form."
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*Murray 6-3 3-4 Haase
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Film director Spike Lee introduced himself to Murray during the basketball at Madison Square GardenImage caption: Film director Spike Lee introduced himself to Murray during the basketball at Madison Square Garden
Murray is not only a confident man these days but a relaxed one, too. On Friday, he took a break from training to watch Rory McIlroy play golf in New Jersey and later joined the world number one golfer to watch basketball at Madison Square Garden. Front row, of course, and a fist-pump with film director Spike Lee.
There's been drama in this first-round match, perhaps not enough for Spike Lee to pay for the script rights but enough for intrigue. Haase holds firm, securing the game with an ace.
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Murray 6-3 3-3 Haase*
Haase undercooks a backhand drop shot and that tame shot gives Murray a 40-0 lead. The Dutchman is wild and wide from the baseline - is he losing his cool at a critical moment?
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"What did I say - move Haase side to side. His movement is not equal to Andy Murray's. That's the way to play against him."
Murray breaks
*Murray 6-3 2-3 Haase
Incredible returning from Murray, and he follows that up by scooting to the net and putting his opponent under pressure. Haase falters and the Scot nudges to a 15-30 lead - but the Dutchman overhauls the deficit only to be dragged back to deuce.
An overhead volley from Murray. Break point. Cheers from the crowd. A baseline battle ensues... Murray groaning, attempting to knockout his opponent from the back of the court - but all he must do is wait... wait... wait... and patience is the winner it as Haase goes long.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Murray's a great competitor but Haase isn't going to lie down. When you stand as far behind the baseline as Murray is, you give the opponent time to run around their shot, and Haase is trying to get into that big forehand as often as he can. Murray needs to move Haase around. He's not controlling the match at all - if he continues staying back, this could be a long afternoon."
Haase breaks
Murray 6-3 1-3 Haase*
Last summer Murray became the first British man to win Wimbledon in 77 years, but the 27-year-old has not reached a final since then.
This is a Murray we were familiar with a few years ago - a set full of ups and downs, opportunities for his opponent, a mixture of mistakes and brilliant winners. Two break points come and go for Haase before Murray, under pressure at the baseline, screws a forehand wide on the third break point.
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Piers Newbery
BBC Sport at Flushing Meadows
The Louis Armstrong Stadium has not always been Murray's favourite hunting ground - the last time he lost before the quarter-finals at a Slam was on the same court against Stan Wawrinka in 2010.
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*Murray 6-3 1-2 Haase
Houston, we have a tennis match on our hands. The world number 70 now seems more comfortably in his surrounding. No longer is he seeing headlamps and hearing sirens. A trouble-free hold to 15 and the Dutchman is in front once more.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Haase has a big first serve and if that starts clicking and Murray's serve flutters, this match could get interesting. I wouldn't give Murray more than a six for the first set. He's got to get much more consistent on his first serves."
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Shohidur Rahman: The serve is a big problem for Murray in terms of how inconsistent he is with it. When he goes big he can't get it in.
Andrew Priestley: Andy Murray is going into this year's US Open as the 'lowly' Number 8 seed & with low expectations. It could work in his favour.
Alana Bardill: Nick Bollettieri has a great voice that wouldn't be out of place in a gangster film!
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Murray 6-3 1-1 Haase*
Murray, dressed in grey and black but with radioactive green trainers adding a splash of colour to his outfit, is far from the swashbuckling superhero who destroyed Haase in the opening four games of this match. But even with his superpowers not firing on all cylinders, the Scot, you sense, has too much in his armoury for his opponent. A brilliant crosscourt forehand winner from Murray and we're level.
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*Murray 6-3 0-1 Haase (* denotes next to serve)
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Murray versus Haase is a rematch of their 2011 second-round ding-dong which the Scot won, although he had to claw his way back from a two-set deficit to see off the right-hander.
If head-to-head records is your thing, then perhaps you'll react enthusiastically when I tell you that this is the pair's fourth encounter. Murray enjoys a slightly superior record, winning two of their three matches.
A much better start for Haase in this set as he races to a 40-0 lead. A serve out wide, which Murray returns into the net, secures him the opening game.
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David Law
BBC Radio 5 live sports extra commentator
"Murray clenches his fist as he wins the first set - he's a much better player when he erupts with emotion like that. At times, this has been too much like a practice session from Murray - just duking it out on the baseline and not really going for his shots."
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Piers Newbery
BBC Sport at Flushing Meadows
Murray's early efforts are attracting a decent crowd in Armstrong and there is the usual flow of spectator traffic and conversation throughout, something the players have to embrace here. Murray has plenty of support as the end of the set gets a bit edgier than he would have hoped. Time for a mass refreshment exit.
Game and first set
Murray 6-3 Haase*
Murray throws in another double fault and the crowd become anxious as they look at the scorebaord and see the underdog 15-30 up. The Briton digs in under the mid-afternoon sun and has a set point but, hang on, Haase is coming back from the brink... He forces Murray on the defensive with a fabulous forehand and ends a 26-shot slug-fest with a deft volley. Deuce! Break point! A crunching return from Haase and Murray seems a little punch-drunk.
Cool head needed and Murray delivers, negotiating the danger by forcing Haase onto his heels and eventually he wraps up the set, his serve back on song and anxiety long gone.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
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"It's not a good sign that Murray is standing so far back behind the baseline. What made the difference in his game the last couple of years was that he came in and started taking the ball on the rise. Haase's not in the top 20 because of his unforced errors, but he's got a big forehand and a big serve."
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*Murray 5-3 Haase
Groans from the crowd as Murray fails to nail an attempted drop shot. Haase adding some oomph to his groundstrokes, easing to 40-0 with a dazzling forehand into the corner and Murray offers little resistance as the Dutchman holds.
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Murray 5-2 Haase*
There are a number of empty seats on Louis Armstrong, but the majority of those who have turned up seem to be cheering for Murray. The crowd favourite brings up game point with an ace and stylishly holds - taking inspiration from the NBA's ballers by floating into the air and unleashing an angry volley.
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David Law
BBC Radio 5 live sports extra commentator
"Haase is looking a little bit more confident now. He does have some thunderous power in his groundstrokes, but he's a little inconsistent. Murray's standing right back with the line judges at the moment, way behind the baseline."
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*Murray 4-2 Haase
No-one in this office truly knows the real Robin Haase, being that there has been no contact or communication with the Dutchman. But what I can tell you is that he's ranked 70th in the world, is 27 years old, and is a right-hander - even though he is actually left handed.
That break of serve was the nerve-easer that the Dutchman needed and he's proving to be more of a contender in this game, getting the better of Murray in a lengthy baseline rally for a 30-15 lead. But, having typed that, Haase double faults for 30-30. Errors from both players as the game progresses to deuce, but Haase eases to advantage with an ace and the game concludes with a faulty Murray forehand.
Haase breaks
Murray 4-1 Haase*
"Ooh" sing some in the crowd, pantomime-style, as Haase grabs two break points. A double fault and an iffy challenge proving to be Murray's downfall as he goes through one of his dips. The British number one trudges back to his seat during the changeover. He's still in control but there could be trouble ahead.
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David Law
BBC Radio 5 live sports extra commentator
"Body language tells you everything from Haase - his shoulders are slumped and his eyebrows are raised. He's got to get himself on the board quickly, otherwise this could run away from him quickly. Murray is in a perfect position."
Murray breaks
*Murray 4-0 Haase
Murray nicks the opening two points but Haase stops the rot with a serve-volley. Murray, shoulders slumped as he comes unstuck at the net for 30-30 and this is as close as the Dutchman has got in these opening four games. But Haase approaches the net once more as confidently as a hippopotamus on ice, and Murray passes him for a break point.
To deuce we go, however.... Haase challenges a Murray forehand, which replays show hit the line so it's a second break point for the Scot. But Murray needs a third break point before sealing the deal - Haase plonking a backhand into the net to gift the Scot a perfect start.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"I'll give Andy a tip - he needs to get in close to the baseline. Haase is standing 10 feet behind. He needs some gimme points from his first serves and some defensive returns."
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Murray 3-0 Haase*
The sound of aircraft hovering up above in the azure sky... trainers screeching on court... one or two yelps of encouragement for the Scot from the crowd... Murray flying and the eighth seed confidently holds with a thunderous ace
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Haase has a bit of a dilemma here - the longer the points go on, the more it favours Andy Murray. Murray's got to play aggressively to get back to where he was last year. He moves so well - his footwork and balance is among the best on the Tour today."
Murray breaks Haase
*Murray 2-0 Haase
Opening point to Murray and the British number one builds on that early momentum, scurrying along the baseline until his opponent nets. Haase, the world number 70, attempting to add variety to his play - coming into the net - but he nets and, suddenly, a break of serve seems inevitable. Murray with a crafty lob over his opponent's head and it's a break to love for the Scot.
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Murray 1-0 Haase*
Murray is on court a tad earlier than expected, but Haase hasn't been caught snoozing, winning two of the opening three points for a 15-30 lead. It's a beautiful afternoon in Queens and Murray has gone native, wearing a baseball cap to keep the sun's rays from his eyes.
The Scot steps in to screw a backhand volley beyond his opponent for a 40-30 lead and seals the deal with a punchy first serve down the 'T' which the Dutchman returns into the net.
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Hello! It's the first day of the last Grand Slam of the season and British number one Andy Murray is in the Big Apple hoping for another fairytale in New York. His first-round opponent is Dutchman Robin Haase and, yes, you guessed it, there will be live text commentary of that match. Actually, THIS is live text commentary of that match.
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When you've not won a title for over a year. When top-10 opponents always get the better of you. When you slide down the rankings, part company with the coach who made you a champion and people start doubting you. What do you do? Do you hit the panic button, look above for inspiration or go for glory?
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Live Reporting
Aimee Lewis
All times stated are UK
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Latest PostPost update
Andy Murray's next opponent is Germany's Matthias Bachinger, who surprisingly beat Radek Stepanek 6-3 6-2 6-2. The 6ft 2in right-hander is playing just his second US Open but didn't let inexperience hinder him against the veteran Czech.
Murray and Bachinger will take to the court on Wednesday. It's time for us to end this live text commentary, let the world's best tennis players play in peace. Thanks, as always, for your contributions. Until tomorrow...
Latest results
One Briton departs and another appears. Johanna Konta is about to start her first-round match with Israel's Shahar Peer on Court 11.
The pair had to wait a while as Julien Benneteau's tie with compatriot Benoit Paire turned into a five-setter. The unseeded Paire was a 7-6 (7-4) 5-7 6-4 4-6 6-4 winner.
On Arthur Ashe, Venus Williams has failed to serve out for the match, which gives Kimiko Date-Kruum hope at 5-3 in the third.
Match stats
Murray 6-3 7-6 (8-6) 1-6 7-5 Haase
The serve was a problem for Murray as cramp set in during the third set. He won 60% of points on his first serve and 51% on his second serve - averaging 100mph and 82mph on his first and second serve respectively.
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Russell Fuller
BBC tennis correspondent at Flushing Meadows
"I can't really remember anybody else being affected by injury like that. What is it down to? There's no question mark about his fitness, it was hugely surprising. It leads you to believe tension played a part but we will hopefully get some answers from Murray but it's even harder to be optimistic about his chances after that first round match."
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"We have to compliment Andy Murray, he didn't moan and groan, he didn't make excuses but let's also say the mind of Haase was disturbed. He thought he had the match but he fell apart mentally."
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Murray and Haase embrace at the net, with the Scot apologising to his opponent about his injury.
"My quads were cramping and I started to get it in my forearms," Murray tells Sky Sports.
"I didn't know what to do, whether to conserve energy or try to finish it in three sets. I just tried to play without using my legs much. These Slams are physically challenging, I need to work out why that happened today because it shouldn't happen after an hour and 45 minutes, even though it was hot."
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David Law
BBC Radio 5 live sports extra commentator
"I think a lot of tennis players would have said it was an injury and got a trainer on but Andy Murray is a fair player and he knows cramp is not an injury."
Game, set and match
Murray 6-3 7-6 (8-6) 1-6 7-5 Haase
"Make my day," says Haase as he superbly returns to draw level at 30-30, twirling his pistol in his hand, chewing on a toothpick. Murray thought he had done the hard part, breaking Haase in the previous game, but he must now prepare for another showdown. Murray saves two break points - Haase netting a thunderous Murray forehand for deuce.
A third break point to Haase... Murray stretching the left shoulder before launching the second serve.... and it's a clean winner from Murray! Deuce! And minutes after we were preparing to talk about the Scot's demise, Murray has match point and victory is his when a Haase forehand dribbles towards the net.
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*Murray 6-3 7-6 (8-6) 1-6 6-5 Haase
Haase performing like a man who thought he had killed off his enemy with one debilitating punch after another, only to see him crawl back while his back was turned. Murray wiping the spittle away with the back of his hand and begging for more. The Scot collects two break points, wastes one but grabs the second with a wonderful return. "Is that all you've got, punk," Murray says. (He doesn't, but you get my drift).
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"This is a ridiculously topsy-turvey set."
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Max Beech: Win or lose this match - Murray needs more matches and more time to recover. This is not Mauresmo.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"The mind of Haase is bewildered. He doesn't know what to make of this."
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Murray 6-3 7-6 (8-6) 1-6 5-5 Haase
An 83mph second serve from Murray is good enough to outwit Haase for the opening point. The Scot dragging Haase from tramline to tramline and, without having to move from the middle of the baseline, the Brit passes teh Dutchman with a canny forehand. An improbably 40-0 lead for the Scot, though Haase is back in contention at 40-30 - a 75mph second serve perhaps a touch optimistic from Murray. He comes through the test though and Murray, the great thinker, is back from the brink.
Murray breaks
Murray 6-3 7-6 (8-6) 1-6 4-5 Haase*
An ace takes Haase to 30-30, but Murray digs deep into his reserves of energy. The fuel gauge might be low but the Scotsman can still produce a dazzling winner into the corner. What? A double faults? Haase double fault and Murray's alive! He's alive!
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Alex Hunter: Feel very sorry for Andy here - his anticipation and movement are such big weapons and he's hobbling at 50% and can barely serve
Haase breaks
Murray 6-3 7-6 (8-6) 1-6 3-5 Haase*
These two opponents performing like out-of-condition old-time heavyweights. The pace has been slowed down, they're slugging it out with one hopeful hit after another. It's painful to watch. Everything happening as if it were in slow-motion. Pride is preventing them from crumbling. But Haase is the stronger of the two and Murray squanders an opportunity to level. It's the Dutchman who will serve for the set.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Sometimes tension can make you freeze up as well, you lose flexibility. I don't believe it's the weather. He says he is in the best shape he has ever been in. He is smiling out there, who knows, maybe he is being coy? Andy is almost like a poker player out there."
Murray breaks
*Murray 6-3 7-6 (8-6) 1-6 3-4 Haase
A series of errors from Haase - a double fault, an overcooked overhead -and Murray is gifted a break point. "Come on, Andy," yells a fan as if he were hailing a cab. The Dutchman unaffected - a forehand winner for deuce. But Murray gets a second chance - second break point if you wish - but pushes his crosscourt volley wide.
A monstrous winning return from Murray, but the wincing former US Open champion immediately grabs his quad and then stretches his shoulder. Murray out of sorts but has enough to win this game on one leg.
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Murray 6-3 7-6 (8-6) 1-6 2-4 Haase*
Murray's feet planted onto the court as he serves, but he comes through to hold in what is a subdued atmosphere on Louis Armstrong.
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"Maybe Murray feels if he can get through this set things might start to loosen up. But he's not making any height with his serve."
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Frank Meehan: Andy had his magic season. Now it's time to retire to the commentary box. The new guys have got his measure now.
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*Murray 6-3 7-6 (8-6) 1-6 1-4 Haase
Haase suffers a tweak or a strain and calls for the trainer. Muscles tightening in the heat. Murray dashes to the net, but he fails to intimidate his opponent and the yellow ball whizzes by. The Scot then nets and it's game over.
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Charlie Clinton: What is Murray doing?! 1st serves at 80mph, demanding ice, no energy... and no trainer....?
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Murray 6-3 7-6 (8-6) 1-6 1-3 Haase*
Murray wins a game! He wins a game! Murray's serves have slowed to mobility-scooter pace, hovering around the 115mph-mark, but that is quick enough to get the better of Haase in this game.
Elsewhere, Ireland's James McGee takes the first set 6-4 against Aleksandr Nedovyesov.
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*Murray 6-3 7-6 (8-6) 1-6 0-3 Haase
The pendulum swung in Haase's favour some time ago and the Dutchman firing across aces which Murray cannot respond to. The world number 70 wins his ninth consecutive game and at the changeover Murray places a towel over his face.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"My assessment is Murray is not right physically. If he loses this game here it is going to be very, very serious. I am surprised he hasn't called for the trainer though."
Haase breaks
Murray 6-3 7-6 (8-6) 1-6 0-2 Haase*
Murray loses the opening two points but somehow, in spite of his feeble serves, the Scot levels at 30-30 before nudging ahead thanks to a deep volley from the net. Haase punishing the Murray serve, given oodles of time to produce a bullet of a return. Break point. Murray crumbling. Physically he's not right. The Brit is suffering.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"There is something wrong here. Murray's first service game will tell us a lot."
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*Murray 6-3 7-6 (8-6) 1-6 0-1 Haase
Murray was rubbing his right quad during the changeover and placing a bag of ice on his overheated legs and neck, but the trainer did not appear. Will Haase take heart from seeing his opponent wounded? Two aces on the trot - his 10th and 11th of the match - eases the Dutchman to 40-15, but Murray responds with a nonchalant drop volley at the net. The Scot opts to come forward once again, but this time he's beaten by a Haase forehand winner.
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"Andy Murray is trying to find ice but they haven't got any and you could hear him say he needs it now. There's definitely something wrong there."
Game and third set
Murray 6-3 7-6 (8-6) 1-6 Haase*
A change of shirt for Murray but not a change of fortune as the white-shirted Scot tamely allows the Dutchman to win the set. Murray stretching during the changeover. All is not right in Murray's world and now he's gesticulating to the umpire.
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*Murray 6-3 7-6 (8-6) 1-5 Haase
Murray recently let winning positions slip when losing to Jo-Wilfried Tsonga and Roger Federer but Haase is no Tsonga, and he's certainly no Federer. Murray, though, seems to have waved the white flag for this set and the Dutchman holds to 15.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"It looks like something's wrong with Andy. There's no energy at all."
Haase breaks
Murray 6-3 7-6 (8-6) 1-4 Haase*
Murray collects two points easily, but is reined in to 30-30 as Murray, in no man's land, is caught looking statuesque at the net. The Scot far from his best, but hangs on to save a break point.
But he is quickly on the ropes again, screwing a backhand wide to gift Haase a second break point and the sun seems to have sapped Murray's energy. The Scot offers no resistance and Haase takes charge of this set.
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*Murray 6-3 7-6 (8-6) 1-3 Haase
An elderly gentleman slowly makes his way up the vertigo-inducing steps before the start of this third game. He needs to up his tempo if he is to take his seat before Haase launches his crackerjack serves towards Murray. The Scot needs to up the ante, too, and he does so by dragging the game to deuce.
Haase goes long to present Murray with a break point but the 2013 Wimbledon champion carelessly allows his opponent to wriggle off the hook.
A turbo-charged second serve from Haase for deuce and Murray can do little but to net his forehand return on the follow-up.
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David Law
BBC Radio 5 live sports extra commentator
"There are tennis players in this draw who will look at the way Andy Murray is hitting his second serve and think, 'I'll lap that up no problem.' I'm almost wondering if there's something wrong with him. He needs to figure out a way to get the rhythm going."
Haase breaks
Murray 6-3 7-6 (8-6) 1-2 Haase*
Murray sweating like a racehorse as the rallies lengthen. The Scot faltering again when ahead, and Haase squanders a fine opportunity at break point. Cool and crisp from Haase from the baseline, sending Murray back and forth, before earning a second break point thanks to a well-worked forehand winner.
Opportunities come. Opportunities go. Advantage. Deuce. Murray instinctively touches his ribs as he watches a Haase winner fly by for deuce. Third break point Haase. Murray wrong-foots his rival with a deep volley from the net.
Fourth break point. Oof! Haase wouldn't have reached that Murray backhand had he started chasing yesterday. Deuce. Fifth break point. Murray wide. Murray broken.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"It's awfully tough to win a Grand Slam playing eight feet behind the baseline. David Ferrer is the perfect example - he does an awful lot, but it's very hard for him to win a Grand Slam."
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*Murray 6-3 7-6 (8-6) 1-1 Haase
At deuce, Murray is a fraction wide with a backhand across court, which allows Haase to breathe a little easier and Haase holds firm to level. Both players toiling in the heat.
In other news, Kimiko Date-Krumm is 4-1 up against 19th seed Venus Williams in the first set, while Jo-Wilfried Tsonga leads Juan Monaco 4-1 in their first-round tussle.
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John McEnerney: "Murray needs real full shot workouts in these early rounds, he's a tad match rusty like Djokovic but unlike Federer, 3 finals on the bounce!"
Andrew Priestley: "Haase testing and pushing Andy Murray hard in this first-round match is not a bad thing, it'll help prepare him for next week."
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Murray 6-3 7-6 (8-6) 1-0 Haase*
A display of floating tennis balls...
Has anyone seen any gravity-defying tennis balls? Anyone? As if the players didn't bamboozle us enough on the court, there seem to be tennis balls at Flushing Meadows which can float without any assistance. It's true. It could be art. It could be magic. It could be both.
Back on the court, Murray has been reined in from 40-15 to deuce and the Scot's shoulders slump a little lower with every point conceded. The two-time Grand Slam champion saves break point - and comes through an iffy service game as Haase plonks a backhand into the tape.
Latest results
Second seed Simona Halep is through after fighting back to defeat Danielle Rose Collins of the US, 6-7 (2-7) 6-1 6-2
And sixth seed Angelique Kerber of Germany also advances after beating Ksenia Pervak of Russia 6-2 3-6 7-5.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Andy Murray is not playing like Andy Murray. That was a five out of 10 set."
Game and second set
Murray 6-3 7-6 (8-6) Haase
Haase closes the gap. From 4-2 to 5-4 and questions are being asked of a wincing Murray. But Haase goes long to present the Scot with two set points - but Murray is hauled in once more and the Scot embarks on a monologue. A swing of the hips from Haase, a forehand down the line and the Dutchman roars - it's 6-6, Murray slaps his racquet on the hard court and the boisterous crowd sing "let's go, Robin".
A hush as Haase prepares to serve for the set... The Dutchman grunts and groans... Murray gambles like a high-roller and the reward is big - HawkEye shows the Scot kissed the line for set point. What has Haase got left? The crowd want more but he goes long on the forehand and Murray goes two sets up.
Post update
Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"The big server is negated a little bit in the tie-breaker."
Robin Haase has won just two of the 14 tie-breaks he has played this year.
Tie-break
Murray 6-3 6-6 Haase
Bravo! Some wizardry from Murray as he beats Haase with a razzle-dazzle of a forehand. A celebratory fist-pump to boot as he levels at 1-1. Perhaps Murray's brilliance has intimidated his opponent because Haase timidly nets for 3-1 and is then undone by another jaw-droppingly good Murray winner. Murray leading 4-1, though Haase bites back and it's 4-2 at the changeover.
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Murray 6-3 6-6 Haase*
At 30-15 Murray is cruising on a street named easy and Haase isn't able to sow any seeds of doubt - slashing wide on the return for 40-15 and mucking up a volley to end the contest. Tie-break? You got it.
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Gigi Salmon
BBC Radio 5 live sports extra commentator
"That was a near-perfect service game from the Dutchman. You don't get too much emotion from Robin Haase, he's a placid fellow."
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*Murray 6-3 5-6 Haase
Pressure? Nah, not for Haase. A blemish-free hold for the underdog, who has performed admirably after an iffy start to the first set. If Murray is to win this match in straight sets he must at least take this one into a tie-break.
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Murray 6-3 5-5 Haase*
One hour and 19 minutes into the match and Murray serving to stay in the set. The former US Open champion is passed on his forehand as Haase levels at 30-30. An ace settles the nerves and Haase screws a forehand wide to gift Murray a point and the game. Tables turn. Some old-fashioned Grand-Slam pressure heaped onto Hasse's shoulders.
Will Stan make it on time?
Stanislas Wawrinka: On my way to the @usopen !Playing 3rd match today!
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American number 7 Bradley Klahn on Twitter: It's like Christmas morning, but 10x better. Gameday baby!!!
Klahn takes on Russia's Andrey Kuznetsov later today.
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*Murray 6-3 4-5 Haase
Excitable whoops from spectators on Louis Armstrong as Haase gets the better of Murray with a delicious drop shot. The Dutchman cruising at 30-0, but Murray makes life uncomfortable by sprinting to the net like a panther to nick a point.
At 40-15, Murray, with nothing to lose, works Haase from side to side and is rewarded as Haase lazily goes long. Errors creeping into Haase's game... blips on the forehand. Murray with a break point... But a sweetly-struck crosscourt forehand gets Haase out of danger and he wriggles free, and to within a game of the set.
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Murray 6-3 4-4 Haase*
Murray's shoelaces become untied between the first and second serve and the loss in concentration results in a double fault for 15-15. Murray misfiring - a second double fault - and Haase has a sniff at 15-30.
"Come on, Andy," shouts a New Yorker. and the Scot listens, aiming a backhand volley at Haase's feet and the Dutchman is made to look as if he has cement in his trainers.
Haase, though, forces the game to deuce but a series of errors lets Murray off the hook and we're even stevens.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"This match is very important for Andy. The serve is key for him to come through this. He's just not the same Andy out here as he was when he was in top form."
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*Murray 6-3 3-4 Haase
Murray is not only a confident man these days but a relaxed one, too. On Friday, he took a break from training to watch Rory McIlroy play golf in New Jersey and later joined the world number one golfer to watch basketball at Madison Square Garden. Front row, of course, and a fist-pump with film director Spike Lee.
There's been drama in this first-round match, perhaps not enough for Spike Lee to pay for the script rights but enough for intrigue. Haase holds firm, securing the game with an ace.
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Murray 6-3 3-3 Haase*
Haase undercooks a backhand drop shot and that tame shot gives Murray a 40-0 lead. The Dutchman is wild and wide from the baseline - is he losing his cool at a critical moment?
Post update
Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"What did I say - move Haase side to side. His movement is not equal to Andy Murray's. That's the way to play against him."
Murray breaks
*Murray 6-3 2-3 Haase
Incredible returning from Murray, and he follows that up by scooting to the net and putting his opponent under pressure. Haase falters and the Scot nudges to a 15-30 lead - but the Dutchman overhauls the deficit only to be dragged back to deuce.
An overhead volley from Murray. Break point. Cheers from the crowd. A baseline battle ensues... Murray groaning, attempting to knockout his opponent from the back of the court - but all he must do is wait... wait... wait... and patience is the winner it as Haase goes long.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Murray's a great competitor but Haase isn't going to lie down. When you stand as far behind the baseline as Murray is, you give the opponent time to run around their shot, and Haase is trying to get into that big forehand as often as he can. Murray needs to move Haase around. He's not controlling the match at all - if he continues staying back, this could be a long afternoon."
Haase breaks
Murray 6-3 1-3 Haase*
Last summer Murray became the first British man to win Wimbledon in 77 years, but the 27-year-old has not reached a final since then.
There have been two major upheavals in his career since that heady Sunday afternoon in SW19 - back surgery last September and a split with coach Ivan Lendl in March.
This is a Murray we were familiar with a few years ago - a set full of ups and downs, opportunities for his opponent, a mixture of mistakes and brilliant winners. Two break points come and go for Haase before Murray, under pressure at the baseline, screws a forehand wide on the third break point.
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Piers Newbery
BBC Sport at Flushing Meadows
The Louis Armstrong Stadium has not always been Murray's favourite hunting ground - the last time he lost before the quarter-finals at a Slam was on the same court against Stan Wawrinka in 2010.
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*Murray 6-3 1-2 Haase
Houston, we have a tennis match on our hands. The world number 70 now seems more comfortably in his surrounding. No longer is he seeing headlamps and hearing sirens. A trouble-free hold to 15 and the Dutchman is in front once more.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Haase has a big first serve and if that starts clicking and Murray's serve flutters, this match could get interesting. I wouldn't give Murray more than a six for the first set. He's got to get much more consistent on his first serves."
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Shohidur Rahman: The serve is a big problem for Murray in terms of how inconsistent he is with it. When he goes big he can't get it in.
Andrew Priestley: Andy Murray is going into this year's US Open as the 'lowly' Number 8 seed & with low expectations. It could work in his favour.
Alana Bardill: Nick Bollettieri has a great voice that wouldn't be out of place in a gangster film!
Post update
Murray 6-3 1-1 Haase*
Murray, dressed in grey and black but with radioactive green trainers adding a splash of colour to his outfit, is far from the swashbuckling superhero who destroyed Haase in the opening four games of this match. But even with his superpowers not firing on all cylinders, the Scot, you sense, has too much in his armoury for his opponent. A brilliant crosscourt forehand winner from Murray and we're level.
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*Murray 6-3 0-1 Haase (* denotes next to serve)
Murray versus Haase is a rematch of their 2011 second-round ding-dong which the Scot won, although he had to claw his way back from a two-set deficit to see off the right-hander.
If head-to-head records is your thing, then perhaps you'll react enthusiastically when I tell you that this is the pair's fourth encounter. Murray enjoys a slightly superior record, winning two of their three matches.
A much better start for Haase in this set as he races to a 40-0 lead. A serve out wide, which Murray returns into the net, secures him the opening game.
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David Law
BBC Radio 5 live sports extra commentator
"Murray clenches his fist as he wins the first set - he's a much better player when he erupts with emotion like that. At times, this has been too much like a practice session from Murray - just duking it out on the baseline and not really going for his shots."
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Piers Newbery
BBC Sport at Flushing Meadows
Murray's early efforts are attracting a decent crowd in Armstrong and there is the usual flow of spectator traffic and conversation throughout, something the players have to embrace here. Murray has plenty of support as the end of the set gets a bit edgier than he would have hoped. Time for a mass refreshment exit.
Game and first set
Murray 6-3 Haase*
Murray throws in another double fault and the crowd become anxious as they look at the scorebaord and see the underdog 15-30 up. The Briton digs in under the mid-afternoon sun and has a set point but, hang on, Haase is coming back from the brink... He forces Murray on the defensive with a fabulous forehand and ends a 26-shot slug-fest with a deft volley. Deuce! Break point! A crunching return from Haase and Murray seems a little punch-drunk.
Cool head needed and Murray delivers, negotiating the danger by forcing Haase onto his heels and eventually he wraps up the set, his serve back on song and anxiety long gone.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"It's not a good sign that Murray is standing so far back behind the baseline. What made the difference in his game the last couple of years was that he came in and started taking the ball on the rise. Haase's not in the top 20 because of his unforced errors, but he's got a big forehand and a big serve."
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*Murray 5-3 Haase
Groans from the crowd as Murray fails to nail an attempted drop shot. Haase adding some oomph to his groundstrokes, easing to 40-0 with a dazzling forehand into the corner and Murray offers little resistance as the Dutchman holds.
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Murray 5-2 Haase*
There are a number of empty seats on Louis Armstrong, but the majority of those who have turned up seem to be cheering for Murray. The crowd favourite brings up game point with an ace and stylishly holds - taking inspiration from the NBA's ballers by floating into the air and unleashing an angry volley.
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David Law
BBC Radio 5 live sports extra commentator
"Haase is looking a little bit more confident now. He does have some thunderous power in his groundstrokes, but he's a little inconsistent. Murray's standing right back with the line judges at the moment, way behind the baseline."
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*Murray 4-2 Haase
No-one in this office truly knows the real Robin Haase, being that there has been no contact or communication with the Dutchman. But what I can tell you is that he's ranked 70th in the world, is 27 years old, and is a right-hander - even though he is actually left handed.
That break of serve was the nerve-easer that the Dutchman needed and he's proving to be more of a contender in this game, getting the better of Murray in a lengthy baseline rally for a 30-15 lead. But, having typed that, Haase double faults for 30-30. Errors from both players as the game progresses to deuce, but Haase eases to advantage with an ace and the game concludes with a faulty Murray forehand.
Haase breaks
Murray 4-1 Haase*
"Ooh" sing some in the crowd, pantomime-style, as Haase grabs two break points. A double fault and an iffy challenge proving to be Murray's downfall as he goes through one of his dips. The British number one trudges back to his seat during the changeover. He's still in control but there could be trouble ahead.
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David Law
BBC Radio 5 live sports extra commentator
"Body language tells you everything from Haase - his shoulders are slumped and his eyebrows are raised. He's got to get himself on the board quickly, otherwise this could run away from him quickly. Murray is in a perfect position."
Murray breaks
*Murray 4-0 Haase
Murray nicks the opening two points but Haase stops the rot with a serve-volley. Murray, shoulders slumped as he comes unstuck at the net for 30-30 and this is as close as the Dutchman has got in these opening four games. But Haase approaches the net once more as confidently as a hippopotamus on ice, and Murray passes him for a break point.
To deuce we go, however.... Haase challenges a Murray forehand, which replays show hit the line so it's a second break point for the Scot. But Murray needs a third break point before sealing the deal - Haase plonking a backhand into the net to gift the Scot a perfect start.
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"I'll give Andy a tip - he needs to get in close to the baseline. Haase is standing 10 feet behind. He needs some gimme points from his first serves and some defensive returns."
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Murray 3-0 Haase*
The sound of aircraft hovering up above in the azure sky... trainers screeching on court... one or two yelps of encouragement for the Scot from the crowd... Murray flying and the eighth seed confidently holds with a thunderous ace
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Nick Bollettieri
American tennis coach on BBC Radio 5 live sports extra
"Haase has a bit of a dilemma here - the longer the points go on, the more it favours Andy Murray. Murray's got to play aggressively to get back to where he was last year. He moves so well - his footwork and balance is among the best on the Tour today."
Murray breaks Haase
*Murray 2-0 Haase
Opening point to Murray and the British number one builds on that early momentum, scurrying along the baseline until his opponent nets. Haase, the world number 70, attempting to add variety to his play - coming into the net - but he nets and, suddenly, a break of serve seems inevitable. Murray with a crafty lob over his opponent's head and it's a break to love for the Scot.
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Murray 1-0 Haase*
Murray is on court a tad earlier than expected, but Haase hasn't been caught snoozing, winning two of the opening three points for a 15-30 lead. It's a beautiful afternoon in Queens and Murray has gone native, wearing a baseball cap to keep the sun's rays from his eyes.
The Scot steps in to screw a backhand volley beyond his opponent for a 40-30 lead and seals the deal with a punchy first serve down the 'T' which the Dutchman returns into the net.
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Hello! It's the first day of the last Grand Slam of the season and British number one Andy Murray is in the Big Apple hoping for another fairytale in New York. His first-round opponent is Dutchman Robin Haase and, yes, you guessed it, there will be live text commentary of that match. Actually, THIS is live text commentary of that match.
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When you've not won a title for over a year. When top-10 opponents always get the better of you. When you slide down the rankings, part company with the coach who made you a champion and people start doubting you. What do you do? Do you hit the panic button, look above for inspiration or go for glory?