Shane Lowry putts up the hill on 18 and leaves a tap-in for par. His dreams of winning a major will have to wait a little longer but it certainly looks like he has the game to go all the way now. Lowry will rue some moments today but he's been a credit to Ireland and European golf on this brute of a course.

Iain Carter
BBC golf correspondent at Oakmont Country Club

"Dustin has been penalised one shot for making his ball move on the fifth. He has finished four under par. That's that." 

It will not make a difference now but how controversial could this have been?

We are hearing Dustin Johnson will get a one-stroke penalty as a result of the ball moving before he struck it on the fifth green.

Good job he won by more than one I guess.

The USGA will have questions to answer on their handling of this.

The last US Open here in 2007 was won at 5 over par and now this one here is won at five under par. 

Also Angel Cabrera won from four shots behind, and Dustin has won today from four shots behind.

Dustin Johnson is in the scoring hut signing his card. The process seems fluid, certainly not one where controversy looks to be present.

Johnson will move third in the world rankings, above Rory McIlroy.

Jay Townsend
Former American professional golfer on BBC Radio 5 live sports extra

“There are a lot of people who feel Dustin would win a bunch of majors once he won one. Maybe this will take the pressure off Dustin and as he is arguably the most naturally talented American golfer playing now, there is no telling what he can achieve from here.”

So let us be clear. The only way Dustin Johnson can be denied a major title is if he is docked two strokes by the USGA and Shane Lowry eagles the final hole of the week.

Lowry just curled in a cracking par save on 17.

It would be freakish and on this occasion, it's probably safe to say stranger things have never happened.

Image source, Getty Images

Iain Carter
BBC golf correspondent at Oakmont Country Club

"He is the US Open champion and at long long last, this man of such innate talent is a major champion."

And with a triple-fist pump, Dustin Johnson has all but won the US Open.

Iain Carter
BBC golf correspondent at Oakmont Country Club

"Dustin will celebrate his 32nd birthday on Wednesday and now he is about to win the US Open. That approach shot was stunning. It was so straight. The most important shot of his life and he nailed it."

Back down on 17 Shane Lowry is about to post a number which could see him slip out of the top five.

A wayward drive, two chips, he's still going and not in a good way.

Iain Carter
BBC golf correspondent at Oakmont Country Club

"He had a putt to win the US Open 12 months ago. That's one of several opportunities he's had to win one. But he now stands on the 18th fairway with an opportunity to finally win a Major." 

Dustin Johnson's partner Paulina Gretzky - daughter of ice hockey legend Wayne - is at the side of the 18th green waiting for her man with their first child in her arms.

The 18-time major winner Jack Nicklaus has a few words for the young child as things are getting exciting around the final green. There's an energy, the champion is present.

Two practice swings for Dustin Johnson as the crowds line this 18th green and he stands in the middle of the fairway.

He sticks his shot to within two three feet. What a shot, what swagger, he's going to win the US Open.

Iain Carter
BBC golf correspondent at Oakmont Country Club

“Poor old Lee Westwood. This is the second time he has marked the card of a major winner. He had the card of Danny Willett at The Masters. You will want him on your card at Troon.”

The galleries here are vocal to say the least and right now, it's all about Dustin Johnson as far as they are concerned.

So this is what it comes down to. Shane Lowry is in trouble on 17. Dustin Johnson, you've fallen short at the death on a number of occasions, it's all on you...