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Right then Rory. How's the putter? Not bad but it's not in the hole. He's up and over a hump in the green and settling four feet to the right.

We've not seen a lot of Shane Lowry because the Irishman is two over for the day and one over overall but that's a decent chip up on to the eighth green and a chance of a birdie.

Jason Day and Dustin Johnson both whack their balls out of the rough. Day finds the sand, Johnson more rough. This tournament is far from over.

Jay Townsend
Former American professional golfer on BBC Radio 5 live

"If McIlroy could post two under par then that is a good number but at the moment Dustin Johnson is looking pretty solid."

Rory McIlroy finds the green on the 17th. He's got 25 feet or so for birdie, although a two-putt par would be a decent result from where he is.

Jason Day tugs his drive on the sixth and he is in the hay. Dustin Johnson also misses the fairway.

Up on the green, Jordan Spieth barely touches his birdie putt from 20 feet but it cosies up to the hole and he is staying three under.

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Dustin Johnson from 18 feet on the fifth and that is looking in but no, it scuttles right at the death and he is staying five under.

And his lead is back to one as Jason Day rolls in his birdie attempt.

Up on the ninth and Brandt Snedeker almost holes his tee shot. He is at one under and has a great chance to improve on that.

Jason Day into the fifth green and do my eyes deceive me? That ball spun back a couple of feet. He'll have a 10-footer to get back to four under.

Rory McIlroy lags up to a foot. He really needed to sink that birdie putt though. I said before the round started that two under could win this. He has a chance to pick up one more on the par-five 18th, but he has the lengthy par-three 17th to negotiate first.

Back on 16 and Rory McIlroy has left his chip short. Now, far be it for me to tell Rory how to play, but surely a little eight-iron chip-and-run would have been the play there? He'll have at least a 30-footer for par.

Thanks Mike. Can I start with an apology to my wife (see 22:54). I will of course get the chipping net out first thing Monday, after I've had a bit of a kip.

I join you as Sergio Garcia finishes up on the 18th with another missed birdie putt. A one-handed tap-in for a two-under 68 and three over total.

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Rory McIlroy has given his tee shot at the par-four 16th some decent stick and found a good spot for his approach.

Back on five, Jordan Spieth sees a long-range birdie putt ride the rim and stay up. That could have been the spark to ignite his round.

It is all going off. Peter Scrivener is here to keep track and take you through the next little bit.

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Movement in the final group on course.

Dustin Johnson plops in his birdie putt and Jason Day does well to escape with his bogey.

We have a new solo leader. And his advantage is a healthy two strokes.

Iain Carter
BBC golf correspondent on Radio 5 live sport

There is perhaps the missed putt and the bogey that costs Rory McIlroy the chance of winning the US Open.

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A nasty dose of cold reality for Rory McIlroy.

He slides his par putt by on the 15th. Painful.

He is back to one under. Is the purple patch over? Or can he revive it to get back into the mix over the next three holes.

Football Focus presenter Dan Walker: "Is anyone willing to go to bed for me now? I'll buy the hours back off you in the morning #USOpen."

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Jason Day with a 57 foot putt for birdie on four.

He has surveyed the peaks and troughs, plotted a route, but that is all wrong.

His putt barely makes it over the first lump on its journey. He puts it to up to within six feet with his next but it is a bogey at best.

Stuart Wilson: "Jason Day has that "thank goodness that shot's over" look after every shot, just as all us amateurs have after every first tee shot #bbcgolf"

Rory Mcllroy is playing golf in the red zone now.

No prisoners taken, caution shredded to tickertape and thrown to the wind.

His tee shot on the par-three 15th is aimed straight as a die at the flag, despite dangers at every turn.

He is just a little undercooked and the ball trails down and away.

A decent recovery, but he will have six feet over the bobbly putting surface to negotiate for par.

Jay Townsend
Former American professional golfer on BBC Radio 5 live

"If Rory gets to five under he wins."

-4 J Day (Aus) 3, D Johnson (US) 3, B Grace (SA) 3; -3 J Spieth (US) 3, -2 R McIlroy (NI) 14 -1 A Scott (Aus) 11 , Level C Smith (Aus) 5,

Selected others +4 J Rose (Eng) F; +7 P Casey (Eng) 16, +8 I Poulter (Eng) 13; +9 L Westwood (Eng) F; +12 L Donald (Eng) F; +13 P Mickelson (US) F, C Montgomerie (Sco) F.

For a full leaderboard, click this way, external.

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If it wasn't for that pesky Rory McIlroy, we would all be talking about Adam Scott's challenge.

The Australian has drained a 23-foot birdie putt on the par-four 11th. That is his fourth of the round and there is not a bogey on there.

He is up to one under, Three off the leaders and with time to make further inroads.

2010 champion Graeme McDowell on Twitter: "Rory gets to -5 and wins in a playoff #prediction"

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And he has pushed it by!

Rory McIlroy's tiddler of a putt slips out of his grasp, flirting with the left edge but never really looking likely.

He stays at two under and two off the leaders. A missed opportunity.