England's Nick Dougherty leads on his own at two under after a 68 following the first round of the US Open at Oakmont Country Club.
Dougherty has won once on the European Tour
Angel Cabrera (69) is the only other player below par at one under, while Jose Maria Olazabal and Bubba Watson are level par.
Sixteen players end one over, including Tiger Woods, Geoff Ogilvy, Vijay Singh and Justin Rose.
Phil Mickelson cards 74 and Colin Montgomerie ends six over after a 76.
ALL THE ACTION AS IT HAPPENED (All times BST)
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0100: Marcus Fraser double bogeys the last to end on two over and that more or less wraps up the first round. See you all tomorrow for round two and the cut!
0047: Marcus Fraser pars the eighth to remain level par with one hole left.
0022: Australian Marcus Fraser (level) is the highest-placed player still on course with two holes left. The last group is playing the 15th and won't be finished until about 8pm Pittsburgh time.
0018: Justin Rose misses his par putt on eight to drop back to one over. Up on 18, Lee Westwood rolls a determined eight-footer in for a par and 72.
0015: Justin Rose has work to do to keep his impressive round on track after firing his second about six feet past the pin on the par-three eighth.
0010: The shadows are lengthening over Oakmont as the Mickelson/Furyk/Scott group finish off on the 18th.
Mickelson cards a battling 74, Furyk takes 71 and Scott runs up a 76.
0000: Ian Poulter leaves himself a nervy five-footer for par at the last and rams it into the back of the hole for a two-over 72. Back on 17, Lee Westwood grabs a birdie to inch back to two over.
2348: Phil Mickelson is also still fighting and has a birdie opportunity on the long par-three eighth but settles for par to stay four over.
Playing partner Jim Furyk makes a bogey to slide to one over, while the third member of the trio, Adam Scott, goes to the 18th tee six over.
2343: Lee Westwood is plugging away but misses his birdie chance on 16 to stay three over.
2336: Ian Poulter is struggling at the 288-yard par-three eighth and after firing over the back with his second shot, he takes three to get down for a double-bogey five to drop back to two over.
US veteran Fred Funk remonstrates with himself after bogeying 18 to card 71 for one over.
2326: Justin Rose drops a second successive shot to drop back to level after 15.
2324: Phil Mickelson makes a sixth straight par to stay four over after 16. Despite his troublesome wrist, the world number two has stuck to his task impressively, rather than just giving up and blaming his injury when things started to go awry.
2317: England's Paul Casey pars the last to card a round of 77 and seven over.
2315: Fred Funk, in a vivid banana yellow shirt, holes another good putt to get bck to level par after 16.
2310: Justin Rose misses his par putt to slip back to one under.
2300: Justin Rose leaves himself with most of Pennsylvania to putt over on the fifth, his 14th, but makes a good effort to leave about four feet for par.
2245: What's that coming over the hill? It's a monster...holed by Fred Funk on the 15th to get back to one over.
England's Justin Rose has a chance to take the outright lead at three under but shaves the hole on fifth, his 14th. Countryman Lee Westwood, though, drops a shot at the massive 12th to slip to four over.
2242: Phil Mickelson tries to stab in a little chip on five but leaves it agonisingly short and has to settle for par to stay four over.
2237: Henrik Stenson was many people's idea of a lively contender this week but the cool Swede is seven over after 15. England's Paul Casey is another unlikely to break Europe's major drought this week - he is seven over after 16.
2227: Justin Rose makes his birdie on the third to join fellow Englishman Nick Dougherty in the lead at two under.
2218: Ian Poulter sets up a great birdie chance on the fourth, his 13th, but slides the four-footer to the right to stay level. On the third, Justin Rose stiffs his second shot to a couple of feet for a lead-tieing birdie opportunity.
2214: Vijay Singh rolls in a slow trundler for birdie on the 14th to get back to level par.
Poulter enjoyed a spell alongside Dougherty in the lead
2210: Justin Rose makes a good six-footer for par on the second, his 11th, to stay one under. England's Kenny Ferrie birdies the fourth, his 13th, to get back to three over.
2205: After eight straight pars, England's Anthony Wall doubles bogeys the ninth to drop to two over.
Australian Adam Scott, who triple-bogeyed the 12th, his third, is three over after 12. Playing partner Jim Furyk drops a shot, too, for level par, and Phil Mickelson remains four over.
2158: Ian Poulter three-putts the third to fall back to level par. Fellow Englishman Lee Westwood also struggles with a double bogey on the ninth to slide to three over.
2151: Co-leaders Brandt Snedeker and Kevin Sutherland both miss chances to take the outright lead.
Meanwhile, Justin Rose edges back to one under with a birdie at the first, his 10th, and Vijay Singh drops a shot on 12 to fall to level par.
2149: England's Anthony Wall begins with eight straight pars.
2143: Scotland's Martin Laird is four over after 14 holes.
2137: America's Johnny Miller lookalike Brandt Snedeker birdies the fourth, his 12th, to join the leaders on two under.
2132: Phil Mickelson drains a good one for bogey on 10 but slips to four over. According to Butch Harmon, the longest iron Lefty carries is a five iron. The others are hybrid clubs.
2129: An overhead view of the course reveals a huge, great motorway running through it. Apparently, it's Interstate 76, the Pennsylvania Turnpike. Interesting. Imagine the M25 slicing through Wentworth.
Anyone know of other major venues bisected by a road/river/railway/runway?
Getting his kicks next to 76, Lee Westwood slides in a 15-footer for par on the short eighth to stay one over.
2125: Phil Mickelson squirts another shot into the rough and has a rueful look on his face. He may well be thinking about pulling out to save his wrist. But then again, he could be thinking about virtually, if not actually, anything.
2121: Ian Poulter putts from off the green on the first, his 10th, and shaves the rim to cries of "ooh". Still, it's a tap-in par and he stays one under.
2119: Co-leader Kevin Sutherland misses a birdie chance that would have taken him clear on his own.
Some English news, and Lee Westwood is one over after seven and Paul Casey is five over after 11.
2113: Phil Mickelson produces another cute pitch from the right rough over a bunker to about five feet on 18. He takes his black bandage off to putt but misses on the left side to slide to three over.
Playing partner Adam Scott is right up against the fringe and opts to putt with the toe of the putter. The ball chips up a bit and falls short but he makes par to stay three over. The third member of the trio, Jim Furyk, misses the birdie chance which would have given him a share of the lead.
2107: American Kevin Sutherland joins Nick Dougherty in the lead after a birdie on the fifth.
2105: Phil Mickelson leaks another drive into the left rough on 18, his ninth, and hacks out with a rescue club before holding his injured left wrist again.
2100: Co-leader Ian Poulter leaves his first putt a good eight feet short on the par-four 18th, his ninth. The second induces a knee-buckle from the spikey-haired one but he drops a shot to slip back to one under.
Meanwhile, Vijay Singh goes out in level-par 35.
2050: The wounded Phil Mickelson conjures a marvellous bunker shot from a deep trap to the right of 17 to set up a tap-in par to stay two over.
2040: The dazzling Ian Poulter, looking like some sort of incandescent hummingbird, makes a good par on the 17th, his eighth, to stay at two under.
Justin Rose, though, drops one at the 15th, his sixth, to end his run of three straight birdies and slide back to level.
2037: Phil Mickelson drags a makeable par putt left on the 16th, his seventh, to drop to two over.
2028: Vijay Singh bogeys the seventh to slip back to level par.
2024: Not that there's any bias going on here you understand but another Englishman Andrew Wall pars his first three holes to stay level par. And while I'm on the subject, Justin Rose birdies the 14th to edge to one under. Told you he was resilient.
2015: England's Ian Poulter birdies the 15th, his sixth, to join countryman Nick Dougherty at two under. Fiji's Vijay Singh birdies six to edge to one under.
2010: Justin Rose is showing the same sort of tenacity he did at Augusta as he fights back from an opening double bogey with back-to-back birdies on the 12th and 13th, his third and fourth, for level par.
2000: Ian Poulter birdies the 14th, his fifth, to get back to one under. He's gritty, is Poulter, and more than just a clothes horse.
His good mate Justin Rose is no shrinking violet either, and edges back to one over with a birdie on the 667-yard par-five 12th, his third, to repair some of the damage from the opening double bogey.
1958: Another good first-tee tale from 606:
"Standing at the first, my Dad was rudely interrupted by a steward who had rushed over to state that tees must be used. My Dad just said, "please go away and let me play". The steward reiterated more sternly about club rules, blaa blaa, blaa, so my Dad said to him to "please xxxx off and let me take my second".
1952: Sweden's Henrik Stenson starts with four straight pars, England's Ian Poulter, resplendent in blue tartan strides, is level after four, and so is Fiji's Vijay Singh.
1945: Former US Open champion Jim Furyk lips out for a birdie two on 13 but remains one under after four. Phil Mickelson rescues a par after a slightly wayward tee shot to stay one over.
1930: Brandt Snedeker bogeys the 15th, his 16th, to slip back to one under, leaving Nick Dougherty in the lead on his own again.
1920: England's Justin Rose kicks off his challenge with a double bogey at the par-four 10th, his first. He showed how resilient he is at the Masters so maybe he'll just shrug it off.
Paul Casey also picked up an early double so there's plenty of work to do for the English lads.
1913: Phil Mickelson carves another drive into the rough and discreetly holds his wrist afterwards. Will he last 18?
England's Lee Westwood begins his campaign with a straightforward par but countryman Kenny Ferrie, who went close at Winged Foot last year, bogeys 11 and 12 to slip to two over after three.
1909: America's Brandt Snedeker joins Nick Dougherty in the lead at two under with two birdies in his first five holes after starting from the 10th.
1905: "Lefty" doesn't look too clever here and pumps his chip quite a way past on 11. He misses the one coming back to drop his first shot.
1900: Phil Mickelson gives his injured wrist its first test as he hacks out of the left rough on 11 with a fairway wood, sort of one-handed. It ends up nicely on the green, too.
"I don't know who will win, but I can say I live only a few miles from the course and the traffic is unbearable!!!!"
mrjoshtee, from 606
1850: Phil Mickelson pars the first along with Adam Scott and Jim Furyk. Up ahead on 11, Ian Poulter just misses a birdie putt which would have taken him into the lead alongside Nick Dougherty.
1844: Phil Mickelson skirts with the first cut of rough on the 10th and fires into the heart of the green in two. Adam Scott finds the fairway and green in regulation, as does Jim Furyk.
1842: Angel Cabrera makes a good par on the 18th for a round of 69 and one under. He'll be angry at dropping a shot at 17, though.
1838: Phil Mickelson, sporting a red shirt and black wrist strapping, sets off down the 10th, his first, with playing partners Jim Furyk and Adam Scott.
1824: Tiger Woods declares himself "pleased" with his 71.
1824: Angel Cabrera makes a bit of a hash of the short 17th and drops a shot to leave Nick Dougherty leading on his own. Time to get a snap of the leaderboard I would have thought.
1821: "If we don't get any rain by the weekend, this is going to be some test."
Jose Maria Olazabal
1818: Tiger Woods makes his par-putt on 18 for a round of 71 and one over.
One-time leader David Toms bogeys five of his last six holes to plummet to a two-over 72.
1815: Tiger Woods conjures a pretty special chip from the greenside rough to give him a relatively straightforward five-footer for par at 18.
Playing partner Geoff Ogilvy is equally impressive with a treacherous putt down a vicious slope but his tap-in is for a bogey and 71 for one over.
1811: Tiger Woods blasts from the rough but catches it heavy and leaves his second shot in the thick collar short of the 18th green.
1808: Sweden's Niclas Fasth birdies his 16th to edge under par at -1. American Steve Stricker also birdies the first as he sets off on his round.
1804: Tiger Woods screams a strangled "no" as he launches a drive into the right rough on 18.
1800: Geoff Ogilvy takes par via thick rough on 17 while Tiger Woods birdies to inch back to one over.
1750: Colin Montgomerie cards a six-over 76. Last year's Winged Foot heroics look unlikely to be repeated this time. Padraig Harrington shoots 73 for three over.
1745: Sorry team, a few technical glitches this end, hence rather sparse commentary. But a "first-round nightmare" story tickled me:
"My first tee nightmare came at the beginning of a once in a lifetime round on the West Course at Wentworth. A road runs below the first tee and traffic stops when you tee off. I hit my ball 45 degrees right deep into the forest. When I finished shaking my head I lookeed down to see Bruce Forsyth in a limo doing the same."
From drstevesouthward, 606
1740: Nick Dougherty signs off with a two-under 68 for the clubhouse lead at Oakmont.
1725: Defending champion Geoff Ogilvy bogeys the 15th to go back to level par, leaving just three players under the card. Jose Maria Olazabal makes a big-breaking par putt on 15 to remain one of them.
1720: England's Nick Dougherty birdies 17 to reach two under and share the US Open lead.
1717: David Toms is experiencing a bit of a meltdown, the like of which I am not unfamiliar to. After two dropped shots, he then makes a half-hash of a bunker shot on the sixth, leaving it in the greenside fringe. He steps up and whacks it about 12 feet past.
1713: Luke Donald almost holes a bunker shot and the entourage all stand around in case it drops before his caddie and brother Christian yanks the pin out fast to avoid hitting the ball with it.
1704: Nick Dougherty squanders a chance to lead the US Open as he slides an eight-footer a couple of feet past on the 16th. He safely makes the one coming back to stay one under.
1654: David Toms runs up a bogey six on the fourth, his 13th, to drop back to two under.
1650: Leader David Toms is having a bit of a "nighthorse" on the fourth, his 13th, while Tiger Woods holes a clutch-putt from six feet on 13 for a par.
1642: Tiger Woods takes his bad mood onto the 13th tee and sticks his tee shot into a tricky position, prompting a couple of "goddamits".
1636: Tiger Woods stalks a 15-footer on the 12th green and gives it a firm smack but sees the ball slide past on the right for another bogey. He slides back to two over.
1630: Big-hitting Argentine (is that his real first name?) Angel Cabrera drops a shot at the 10th to slip back to one under, leaving David Toms two clear at three under. Toms then leaves a birdie chance an inch short.
1627: Tiger Woods is making messy progress up the 12th, via the left rough and the left greenside bunker.
1623: Luke Donald also sinks a big 'un to edge back to three over after 10 holes. Sergio Garcia,meanwhile, goes out in 42 and drops another shot for eight over after 12.
1610: England's Nick Dougherty drains his second long putt to get to one under after 13.
1552: Afternoon all! Looking forward to guiding you through to the conclusion of today's first round at Oakmont.
My first impressions of the course are of a very lush mat-like appearance to the rough.
There may be a couple of the shorter players and caddies lost in there this week.
Someone should be tasked with counting them all out and counting them all back.
1546: As I've been here since six this morning, I reckon it is time for me to handover to my esteemed golf colleagues. Thanks very much for your company and keep those first tee horror stories coming in, they have been fantastic.
1540: Woods smashes his club into the ground after watching his tee-shot fly into the rough at the 10th. This could be a dropped shot.
1536: Two-time US Open winner Goosen moves to within a shot of the lead thanks to a birdie at the 7th.
1535: "I had overindulged spectacularly the night before and thus was delicate in the extreme when I bent down to tee the ball up at the short 1st at Moore Place, Surrey. Unfortunately the action of moving from the vertical severed the fragile grip I had on my breakfast, which was then deposited spectacularly into a nearby bush."
1530: Olazabal finds the lush rough at the 9th and it can only mean one thing from there - trouble. After trying to hack his way out of it , he duly drops a shot and now it is just Cabrera and Toms out in front.
1528: It goes from bad to worse for Colin Montgomerie. He cards his third bogey in a row and is five over - seven strokes off the lead.
1520: Cabrera makes his first mistake of the day and slips back to two under. Woods meanwhile, looks to have given himself a chance with a nice recovery after finding sand at the 8th but then misses the par putt. Sloppy mistake. Els bogeys his ninth to join him on level par.
1520: "Woods will win again. He has to play bad for anyone else to win. He can hit his long irons as far as others drive so should have the accuracy for this course."
1516: Oh dear Monty. Two bogeys in the final two holes of his front nine means he is now on four over.
1505: Lots of movement now. Angel Cabrera takes the lead on three under with the third birdie in his opening five holes. David Toms joins the group on two under while Tiger Woods and Ernie Els move to one under. Luke Donald briefly goes to one under but then bogeys the 5th to return to level.
1459: "As captain of junior section I had to tee it up in a crucial county match. Dignitaries and all players watch me lead off in the foursomes. Extremely nervous to say the least.
"Huge swish as I try to leather it to kingdom come. Much sniggering as playing partner has to walk back from his position 200 yards down the fairway to play our second from approximately an inch from where I had teed it up."
1455: After a run of four straight birdies, Ernie Els goes to one under with a birdie at his eighth. He has started consistently, hitting all of his fairways so far.
1444: American Pat Perez joins Olazabal with birdies at his second and third and is soon followed by Angel Cabrera who birdies the 609-yard par-five 4th.
1438: Jose Maria Olazabal is out on his own in the lead and is the first player to move to two under thanks to a birdie two at the 6th.
1433: Thomas Bjorn and Nick Dougherty drop back to level par while Colin Montgomerie is still on one over after seven holes. The Scot talked earlier this week about the importance of hitting the fairways at this course and so far he has hit five out of five.
1430: "Waiting on the first at my old club in Sussex, I watched one of the previous two-ball snap hook onto the 18th about 40 yards away. It trickled across the green and fell into the cup. In other words a round of one. Perfect golf!"
1425: After five pars, England's Nick Dougherty birdies the par-three 6th while Rhys Davies drops to level par with a bogey at the 18th, his ninth.
1412: Sergio Garcia has a disappointing start and is two over after four holes courtesy of a double bogey six at the 3rd. Big-hitting Argentine Angel Cabrera birdies the second and joins the ever-expanding group on one under.
1404: "It's that first at the West Course again. Off the heal from the tee and on to the putting green. Never nice but on the plus side I almost hit Prince Andrew who was practising his stroke - doing his bit for Mum and country again. The round was ruined by the sound and sight of the helicopter following him around a few groups behind. Why can't he walk like everyone else?"
1353: Nerveless stuff from Rhys Davies who goes to one under with a birdie at the 231-yard par-three 16th, his seventh hole. Spain's Jose Maria Olazabal is one under after three while Stuart Appleby joins the leading group after an eagle two at his second cancels out his bogey five opener.
1347: "I used to work with Mark Orlovac and don't remember him knowing an awful lot about golf. I guess the funny live text guys must both be on annual leave today."
1344: Denmark's Thomas Bjorn birdies the 11th, his second, to join five other players leading on one under. The six include David Toms and Kirk Triplett while Tigers Woods, Ernie Els, Luke Donald, Sergio Garcia, Padraig Harrington and Rhys Davies are in the pack of 27 on level par.
1339: "Many years ago, happily thinking I was invited to a relaxed corporate Pro-Am, I found myself in fact at the Pro-Am round of the (then) Benson & Hedges tournament.
"I was paired with Ryder Cup player Jose Rivero and the Fulford Club captain. I'm a happy hacker, and this was all too much.
"The television crews were practising their angles, the place was crowded with fans, and it was pouring with rain. My tee shot, with cameras clicking, went about twenty yards along the ground - but straight. It was just about the best shot I hit all day."
1333: Problems for Monty at the 12th as he cards a double bogey seven to fall back off the lead. Elsewhere, it's bad news for Boo Weekley as he makes a bogey.
Bubba Watson is keeping his end up for the silly names brigade at the top of the leaderboard, but he's no Boo Weekley.
1327: Not the start that Tiger Woods was after as he bogeys the par-four opener to slip to one over. It's game over for the 12-time major winner. He might as well give up now.
1315: Ernie Els birdies the 11th, his second hole, to join the group of players at one under. Boo Weekley is still there, and - on behalf of fans of silly names everywhere - let's hope he stays with the leaders.
1307: "First tee nightmare? Druids Glen - hooked it badly with a crowd watching and then proceeded to fall over while trying to pick my tee up. Farce.........."
1254: Good start from Monty who fires a birdie at his first. The early starters have been helped by the thunderstorm on Wednesday night which has made the greens a bit softer and just that little bit more receptive.
1251: "En route to the first tee, I walked straight into pro-shop door. Sound of head cannoning off door brought roars of laughter from the clubhouse."
Iain, Aberdeen via text
1244: Walker sits proudly at the top of the very early first-round leaderboard. He is on one under after three holes together with three others including the wonderfully named Boo Weekley. McDowell starts his round with a bogey.
1235: From the six starters there are three bogeys, two pars and a birdie at the opening hole. This is the kind of mix we might be seeing this week. For mlacolm on 606, who has bet his house on Rhys Davies making the cut, the Welshman is one over after his opening two holes.
1227: "I can better your West Course nightmare. On the same first tee I managed to sky one that bounced once off the road! My saving grace was it was seven in the morning and no-one was around! Straight down the middle Luke Donald to go close."
1222:"I was teeing off first in the quarter-final of the Lesley Wood competition at Burnham Golf Club. All a bit nervous with a three wood in hand and I skied it about 20 yards! One guy from the balcony said: "poor lad, he's only young". I was 16! Say no more, I won 6&5.
Adam, Rochford via text.
1214: Players to look out for early on. Northern Ireland's Graeme McDowell goes at 1222 while Montgomerie, Chris DiMarco and Nick Dougherty start at 1233. South African Ernie Els, winner of the US Open in 1994 and 1997, and Padraig Harrington are in the same group teeing off from the 10th at 1244.
1205: "Moor Park, Leeds, not long after starting to play. First tee in a charity event with a few spectators. Hit low drive into ladies tee-box, bounced back like a bullet, scattered partners on white tee and ended up about 30 yards backwards! Tiger will, of course, win."
1158: England's Sam Walker, Ken Duke, Johnson Wagner (from the 1st) and Welshman Rhys Davies, Michael Putnam and Lee Williams (from the 10th) are all ready to get the tournament underway. In Pittsburgh the sun is out but it is cool, perfect conditions for start of play.
1153: "I played a fourball match last night in pouring rain. It was like standing in a waterfall for three hours plus. My first tee shot at the par three opener went about 30 yards over the green and I had about seven hacks at it before giving up.
Luckily (and it was very lucky), my partner holed a 30 footer with about three feet of break for a three and we won the hole and went on to win the match 4 and 3.
What made it even more special was that it was against the course owner and he was fighting back the tears after his walloping."
1148: "I've backed Stenson, Rose and Oberholser all each way but Nick O'Hern's short game could win it too.
From Ken, Aberdeen via text.
1133: "The US Open always excites me. I don't expect this week to be any different. I was almost in tears when Monty blew it last year. I think the winner will come from one of these players: Padraig Harrington Retief Goosen, Colin Montgomerie, Luke Donald, Berny Langer, Jim Furyk, Nick O'Hern. +5 to win it."
1125: Morning all. It's nearly tee-off time for the year's second major.
The course looks a brute. There is a par five at 667 yards, a par three at near-on 300 with greens so fast you might as well be putting in an enamel bath.
Colin Montgomerie said during the week that Lee Westwood had told him that he would take six over for the tournament now. That shows you what the pros think lies in store this week.
The start is at 1200 BST so we need lots of chat on who you think will win, the course and the European challenge.
And as we are approaching the nervy opening shots for the early starters, let's also have your first-tee nightmares (on 606 or via text).
I'll kick off.
A few years ago I was fortunate to play the West Course at Wentworth. Despite my shakes induced by the watching members I somehow managed to get the ball airborne but I sliced it so badly it might as well have landed up in Sunningdale. My poor tee shot did not lead to my ejection from the course and I went on to par the second. No bugger was there to see that one though.