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It's a good thing there aren't any crowds Tiger - the 15-time major winner and former world number one gets right under the ball with his wedge to the green - it sails up into the air and almost spins back to where he pitched the shot.

Embarrassing.

He tries it again and it has a better outcome. However, he finishes with a double bogey - shame, because it was looking good at one stage.

Justin Thomas ends with a birdie for a 65, five under and the outright clubhouse lead. The former world number one's major to lose?

US PGA champion Collin Morikawa had an awful back nine. He finishes with a par and 76 for six over.

A birdie putt for the four-time major winner just slips past the hole at the last.

He also had that eagle chance on the sixth which ended up as par - it could have been an outstanding round but instead he'll have to suffice with just a 'great' round.

It's par for McIlroy and a three-under 67.

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Tommy Fleetwood says he remembers the US Open's last outing at Winged Foot, when Colin Montgomerie and Phil Mickelson both made a double bogey on the 72nd hole when poised to win.

“Monty is still one of my favourite golfers and I was pulling for him that week, it would have been great to see him win a major and it was one of the most unexpected finishes to a golf tournament ever,” said Fleetwood, who was 15 at the time and watching at home with his dad.

“It was on TV the other week and you forget things like when he holed a (birdie) putt on 17 and I think at that moment everybody thought it’s Monty’s time and that he was going to do it finally.

“Then he stands on the tee and everyone thinks he can’t draw the ball and then rips the tee shot, and it was a disaster for him after that.

“And then for Mickelson to stand up at the last, he was the best player in the world at that time and looked like he could win every major, and you just did not see that happening at all.”

Some quotes from American Patrick Reed, who has the clubhouse lead on four under and came up with a hole in one at the seventh. He says: "I took a bit off, hit it 90%, one bounce and in."

He adds: "It was a scramble out there, my short game kept me in it. When you get lies that you think look OK, it can still be bad.

"Over the four days you will have a stretch when you are not hitting the ball well."

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You might be wondering why the venue is named Winged Foot? Well, according to the PGA Tour, it comes from the logo of the New York Athletic Club.

The group that founded Winged Foot included several NYAC members, though the organisations have never been affiliated.

It's close at the top, but who is going to win and why? Tweet us at #bbcgolf

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Nobody should be surprised by Bryson DeChambeau's tactics this week - hit it as far as he can.

"I'm hitting it as far as I possibly can up there," said the American.

"Even if it's in the rough, I can still get it to the front edge or the middle of the greens with pitching wedges or nine-irons. That's the beauty of my length and that advantage.

"Obviously, if it's into the wind and there's some of those situations going on, it's going to be different. There are certain holes I might lay up on just because of the situation but for the most part I'm going to be trying to go after it as much as I possibly can.

"Even if I hit it in the rough, I still feel like I can make birdies out here. I still feel like I can run it up the middle of the green and make a 20-footer. I'll give myself opportunities to still make birdie, whereas most people are laying back, short of a bunker, hit it in the rough even.

"It's not guaranteed if you lay up you're in the fairway, right? So there are going to be times that people hit it in the rough, and I think the person that's going to win is going to hit the most fairways and going to make the most putts and also hit it on the greens.

"It's a simple formula, obviously. But again, you have to execute it. That's the whole point of a US Open, is it's supposed to be tough."

Patrick Reed knocks in on the 18th from three feet and that is his day finished - four under and a share of the lead.

American Reed surely couldn't have imagined this situation when he was two over after five, because of a double bogey on the fifth. But he birdied the next and then hit a hole in one at the 165-yard par three seventh.

Three further birdies followed - at 12, 13 and 15 - and Reed, the 2018 Masters champion - has had a great day.

A sweeping dogleg left with a complex green, which is extremely quick back to front.

Phil Mickelson, Colin Montgomerie and Jim Furyk all stumbled here in 2006 as Geoff Ogilvy emerged as US Open champion with a five-over-par total.

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And it’s the two from the Brat Pack that still lead the US Open.

-4 Reed (17), Thomas (17)

-3 McIlroy (17*)

-2 Kokrak (F), Todd (F), English (F), Rousard (a) (2)

A very unfortunate break with a par putt for Tiger Woods on the 17th - painful.

Justin Thomas, seeking his second major, holes his par putt.

The course leader looks set to be the joint clubhouse leader with fellow American Patrick Reed.

18:05 Gary Woodland (US), Andy Ogletree* US), Shane Lowry (Ire)

18:16 Dustin Johnson (US), Bryson DeChambeau (US), Tony Finau (US)

13:27 Phil Mickelson (US), Paul Casey (Eng), Jon Rahm (Spa)

18:38 Rickie Fowler (US), Matthew Wolff (US), Viktor Hovland (Nor)

From the 10th tee:

17:54 Lee Westwood (Eng), James Sugrue* (Ire), Bubba Watson (US)

18:05 Daniel Berger (US), Matthew Fitzpatrick (Eng), Branden Grace (SA)

18:16 Kevin Kisner (US), Tommy Fleetwood (Eng), Abraham Ancer (Mex)

18:27 Louis Oosthuizen (SA), Zach Johnson (US), Keegan Bradley (US)

18:38 Xander Schauffele (US), Billy Horschel (US), Brandt Snedeker (US)

Previously a long par four, the ninth has been extended by 50 yards but now offers a birdie chance as a par five with another undulating green with a mound in the middle.

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Wow Rory! But a bad wow!

A relatively simple birdie chance turns into a tricky par putt from four feet Rory McIlroy - he makes it though.

Three under as we head to his last - the ninth.

Justin Thomas asks an official on the course whether it's a rock or sand in a bunker at the 17th. If he removes it and it improves his lie then he would be trouble.

He doesn't use his hands and goes for it. Sadly for him the ball ends up in a bunker next to the green - hopefully, there isn't a sand/stone that confuses him there.

Rory McIlroy lets out one of the great sighs of the week at Winged Foot, as he leaves his iron about eight feet short on the par-four eighth. It wasn't that bad from where we looking.

High standards, and all that eh?

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Here's a few words from US amateur Davis Thompson, who is not lacking in confidence.

When asked what he had learned today, he replied; "I can compete with the best. I had a rough finish but you're going to make bogeys here if you miss fairways.

"I came here to compete, not to be a tourist."

Co-leader Patrick Reed finds the rough off the 17th tee, but a good recovery with his second shot leaves him 30 yards past the hole.

He goes for it and would've taken the outright lead if he nailed it, but, no, as it drifts to the right, but close enough to help him get par so he stays on four under.

This medium length dogleg right hole requires precision with both the tee and approach shot. The kidney-shaped green is very narrow, making recoveries from the left or right equally difficult.

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After that birdie, Woods finds a bit of rough on a platform to the right of the fairway.

Co-leader Justin Thomas might have found a bunker from his tee-shot on the 17th.