US OPEN LIVE: All the action as it happens on day two at San Francisco's Olympic Club

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UPDATED:

15:04 GMT, 15 June 2012

US OPEN – ESSENTIALS

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Welcome to Sportsmail's live coverage of the US Open at The Olympic Club, second round.

The biggest names in the game are facing
their toughest test yet with narrow fairways, ankle-deep rough and a
high demand for shot-shaping on this beast of a track just south of the
Golden Gate Bridge.

Stick
with us and we'll bring you the latest news, live scores and all the
best pictures.

LEADING THE WAY AT THE US OPEN

-4 Michael Thompson F

-1 Tiger Woods F
David Toms F
Nick Watney F
Justin Rose F
Graeme McDowell F

selected others in the clubhouse
E Ian Poulter
+3 Lee Westwood
Marc Warren
Sergio Garcia
+6 Phil Mickelson
+7 Rory Mcilroy
+8 Bubba Watson
+9 Andy Zhan
Luke Donald

16.03 Speaking of comebacks, here comes Luke Donald taking the first steps to recovery, with a birdie three on the ninth. Just the eight more to make up to restore parity. With him, Lee Westwood and Rory McIlroy settle for pars. Confident start from the trio.

15.58 We've had another ray of sunlight on this graveyard of a course – Denmark's Soren Kjeldsen, playing in his first Major since 2010, has picked up a shot on the first. For him, the comeback starts here… he posted 15 over on Thursday.

15.50 First bit of action from an Englishman is slightly more encouraging. Simon Dyson, playing with Colsaerts and Charlie Wi, has parred his first, the ninth, to maintain his score of four over. On Thursday, Dyson, who has failed to make the cut in his last three US Open appearances, produced a mixed round of three birdies and seven bogeys yesterday.

15.44 Early indications certainly are that the course is as unforgiving today as it was on day one. Of the 24 holes played so far, Colsaerts remains the only player to have progressed.

Lee Westwood, Rory McIlroy and Luke Donald are imminent.

15.35 Slow start from those off early. Playing off the ninth, Casey Martin and Cameron Wilson have dropped another shot, while alongside them Dennis Miller, the least successful of the trio yesterday, has held for par.

Elsewhere on the course, Morgan Hoffman has dropped two shots off the first, putting him back to four over. Conversely, there has been just the one gain early on, Belgian Nicholas Colsaerts picking up a shot on the ninth.

15.28 Cameron Wilson (+7), Casey Martin (+4) and Dennis Miller (+10) are the first out onto the course today. A glance at the weather forecast suggests perfect conditions across San Francisco throughout the day, and rain all but impossible. Has there ever been a day like that back in Blighty

Out on his own: Michael Thompson is setting the pace at the US Open after the first round

Welcome Good afternoon to you all, except those tuning in Stateside, to whom I bid a Good Morning.

Well, where to begin with day one's
action I suppose you should start at the top, or bottom in the case of
the planet's three 'best' golfers.

As Sportsmail's Derek Lawrenson so
brilliantly put it, Luke Donald, Rory McIlroy and Lee Westwood 'went
into the US Open as the world's top three golfers. They came out of the
first round feeling like punch-drunk boxers who have had one fight too
many.'

Between the world's top two, their
combined score is 16 over par, while Westwood recovered to at least keep
himself on the fringes, ending the day three over.

Away from the astonishing
performances of Britain's brightest hopes, at the sharp end of business,
Tiger Woods produced shots befitting his three previous triumphs at the
US Open, carding one under, where he is joined by four others – David
Toms, Nick Watney, Justin Rose and Graeme McDowell.

Leading the way, though, is Michael
Thompson after a first round 66. The 27-year-old, in only his second
term on the US Tour, has previous in this Major having been low amateur
in 2008.

So, a stunning day for many different
reasons, providing stories that would we'd be happy to be span four
days, let alone one. Here's hoping to something similar today.