That's your lot for round one.

American JJ Spaun is setting the pace at the top of the leaderboard at four under with South Africa's Thriston Lawrence a stroke further back.

Five-time major champion Brooks Koepka is alongside South Korea's Si-woo and Im Sung-jae at two under, while Jon Rahm is also in contention.

But many of the big names, including world number one Scottie Scheffler and Rory McIlroy, who toiled down the stretch down, are some way back as Oakmont bared its teeth.

We've got all of that covered in our report.

See you all at around 12:00 BST on Friday for more of the same.

Patrick Reed's albatross, only the fourth in the history of the US Open is undoubtedly one of the highlights of the first round even if the former Masters champion did not have a clue what was going on at the time/

Only the fourth and 17th holes have averaged a score under par today at Oakmont.

Brutal.

Rory McIlroy was looking in good shape at two under after nine holes on Thursday.

But his round unravelled on his back nine with four bogeys and a double bogey to leave the current Masters champion, with plenty of work to do to get back into contention.

Scottie Scheffler says he made some "silly mistakes" today and needs to be a "little sharper," after shooting the worst opening round of his majors career (his 73 at the 2021 Masters was only one over).

And if you want an illustration of just how below his usual level, the world number one was, here you go.

Rasmus Neergaard-Petersen reaches the clubhouse at one under. A very good opening round for the 25-year-old Dane.

Rasmus Neergaard-Petersen is playing alongside amateur Justin Hastings.

And the man from the Cayman Islands is having one on the 18th after zinging his ball way left off the tee into a horrible, almost unplayable position in the rough.

Rasmus Neergaard-Petersen and James Nicholas are the only two players out on the course that are currently under par.

The Dane is moving on to the 18th, while the American has two holes to complete, the eighth and ninth.

Tony Finau loves his approach into the 18th but it hits a sprinkler head and trampolines up into the stand behind the green.

A case of, if anything can go wrong, it will, for Finau, who is at six over. A fan chucks his ball down to him which has a huge mark on it from the sprinker and the American throws it back over to a youngster in the crowd.

Image source, Getty Images

A pleased Jon Rahm spoke after shooting 69 in his opening round at the US Open:

"Just a really good round, really good golf in general. Everything felt good.I'm extremely happy. I played some incredible golf to shoot one under, which we don't usually say. Not many things I could really say about today

"It's nice when you get those scoreboards and it tells you how difficult holes are playing. You know that if you're making par, you're gaining pretty much half a stroke on every hole.

"It's one of the craziest things that you can see. So pars are always good. And knowing that if you make a bogey, you're not losing too much."

Rasmus Neergaard-Petersen is scrambling on the 16th. Chipping up and over a huge bank that makes it look like he's behind a Grand National fence, he sends his ball 14 feet past the pin.

Another tough putt incoming and another shot slips away.

Funnily enough the Dane was the first player to win three times during a regular Challenge Tour season since England’s Aaron Rai in 2017, earning him a promotion to the DP World Tour.

Wolverhampton's finest, Aaron Rai is on the green but 90 feet from the flag on the long par-three eighth.

He must almost feel like he's putting this from the West Midlands in the UK and overcooks his effort, sending it some 11 feet past.

That's going to cost the Englishman a shot.

Image source, Getty Images

For all you Patrick Reed fans out there... it's been quite the round.

After that barely believable 286-yard albatross all the way back at his fourth hole, he's just wrapped up with a miserable triple bogey down 18.

It leaves him at +3 for the tournament alongside the likes of Bryson DeChambeau and Scottie Scheffler.

So not too bad company then.

Cameron Young has wrapped up his round with a very steady level par 70.

Midway through his back nine, he had made it to two under par but Oakmont refused to let him stay in the red, and a final hole bogey leaves him at 70.

Still well placed though after round one.

Rasmus Neergaard-Petersen drops a shot on the 15th and now strays right into argiably one of the worst spots of rough on the course off the tee on 16.

He'll do well to stay in the red numbers by the looks of that.

Image source, Getty Images

Brooks Koepka speaking to Sky Sports after shooting 68 to sit two off the lead:

"It was a lot of patience and then you've got to take advantage if you get an opportunity. I felt like I did that today - hit a lot of fairways, hit a lot of greens.

"I've made a lot of changes. The last year hasn't gone very well. I've got into some bad habits. Sometimes it's hard to get out of that.

"Last week I built a lot of momentum. My coach Pete Cowengave me a stern talking to earlier this week and I have just tried to take that attitude into this week."

Elaborating on his comments in his media conference later:

" I don't like having "yes" people around me. I just want somebody to tell me the truth, tell me what's going on, what they see. If I start swaying from being Brooks Koepka, then I want someone to call me out on it, and he did a helluva job on it."

Rasmus Neergaard-Petersen has trouble getting the ball out of the cup on the 14th but none getting it in.

The Dane knocks in a tricky left-to-right putt from 16 feet and remains in a tie for second.

A generous round of applause for Scottie Scheffler, who finds the heart of the green with his approach at the 18th.

He'll have a birdie putt from just over 20 feet with Viktor Hovland, putting from even farther back.

The Norwegian sends his ball streaking across the green and shares a smile with the world number one as his ball drops in. That was a brilliant way to end his round but Scottie can't follow suit and an underwhelming round for him ends on a flat note.

Collin Morikawa also concludes with a birdie thanks largely to a majestic iron shot to four feet. The two-time major winner is in decent shape on the leaderboard in a tie for 13th.

Im Sung-jae looks a little jaded as he wanders cross the ninth green to mark his ball after leaving his uphill birdie putt four feet short.

Straight and firm to finish and despite a bit of a scruffy finish, I suspect he'll be reasonably content with his day's work.

Jon Rahm's putt is lacking a bit of pace on the ninth hole and pulls up a little short. That sort of tiddler that you think you should make with no bother but end up missing.

While the Spaniard contemplates what he hopes will be be his final shot of the day, Jordan Spieth steps up to his putt and looks to hit his ball on a good line... but it lips out. Bogey finish for the 2015 champion.

Dustin Johnson is up next, rolling in from a dozen feet to drop just the one after his horror of a second shot.

And here's Rahmbo to tidy up. Another 69 for the Spaniard in the opening round. I'm sure I saw a graphic on the TV earlier that said he's shot a 69 in every first round, bar one, since 2019.