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That's unlucky. Sam Stevens' birdie putt at the last just slips by on the right and he taps in for a par and a third-round 72.

He's hung around admirably today and this is some performance from a man who was playing mini-tours a few years ago.

Xander Schauffele can't get his birdie putt to drop either and he tidies up for a par. That's a 73 for the two-time major winner which isn't to be sniffed at considering he had two double bogeys on the back nine.

Iain Carter
BBC golf correspondent on BBC Radio 5 Live

An excellent par for Wyndham Clark given that wayward tee shot.

Played the rules beautifully and off he goes to the 18th hole on Saturday at the US Open with a seven-shot lead.

Wyndham Clark gets a cut on his arm for his troubles but he's not complaining after that drop - as he plays another nice chip and rolls in the putt for another par save.

One more hole to go before he can finish up and go start composing his acceptance speech.

Xander Schauffele clips a dead-eyed wedge into the final green and he'll have 17 feet for a closing birdie and to finish one under.

Sam Stevens goes slightly long and is looking at a 20-footer down the hill.

It's hard not to notice how Shinnecock Hills has emptied. It looks deserted out there.

Iain Carter
BBC golf correspondent on BBC Radio 5 Live

Wyndham Clark has not done anything incorrect there. He was given relief from the obstruction and he took it.

If that TV camera wasn't there, he's hit the ball into knee-high rough. But now he's been able to put the ball where it's a routine shot.

Awful shot on 17 from Wyndham Clark off the tee, with a huge pull to the left and into the fescue - but his ball dopped right by a camera stand so he gets a drop away from danger.

And he manages to drop the ball perfectly to roll it back into the camera stand so he can now place the ball just as he likes it - so from deep in the fescue he's now got a clean lie to chip from.

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Wyndham Clark currently leads the US Open by seven shots - which if it holds would match Jim Barnes in 1921 for the third biggest 54-hole lead in tournament history.

Only Rory McIlroy (8) in 2011 and Tiger Woods in 2000 (10) enjoyed bigger leads than this heading into the final round of the US Open.

Nice judgement from Tom Kim, 60 feet across the 18th green.

He leaves himself three feet to make par and stay in the red before the final day. In it goes - well played.

Collin Morikawa closes out with a par too. He's one over for the tournament.

Iain Carter
BBC golf correspondent on BBC Radio 5 Live

I don’t want to be Mr Misery but Wyndham Clark has bent down with his pitchmark repairer and in that four feet, he has effectively turned turf up in four different ways on his line and tapped it down with his putter to basically flatten out its path. It’s almost like making a trough to the hole.

I don’t think that is using the spirit of the rule that allows you to tap down spike marks. He's mitigating against the unevenness of the growth of the grass - but that's the surface you're playing on.

I just don't think that is right.

An interesting bit of gardening on the green by Wyndham Clark before he holed that eagle putt. He's allowed to tap down and repair spike marks between his ball and the hole but the American seemed to be finding an inordinate amount of them.

I'm not suggesting he's done anything wrong but the rules officials may be wanting to take another look at how much work he was doing, banging his putter into a surface that has become more crusty and uneven as the day has worn on.

Well, the chasing pack need a miracle, but Sam Stevens and Xander Schauffele have to settle for par threes at the 17th.

Don't look at the leaderboard, lads.

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He missed a shorty on the last but not here, as Wyndham Clark rolls in an eagle putt on 16 to move to eight under, one under for his round and now incredibly seven shots in front at the US Open.

He's turning it into a procession at Shinnecock Hills.

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Wyndham Clark is doing a brilliant job of sucking the life out of this tournament with a round still to play.

Shades of Martin Kaymer's bloodless performance at the 2014 US Open. He led by six after two rounds, five after three and eventually won by eight.

A rueful look from Tom Kim as his second shot skips onto the green and bounces off the back.

He'll have a tricky two-putt for par from there.

Iain Carter
BBC golf correspondent on BBC Radio 5 Live

Forty three inches from the cup, beating Scottie Scheffler's 13 feet from earlier, which was the previous closest.

We've not had an eagle the entire week at 16.

Hitting into the lowering sun, Sam Stevens and Xander Schauffele are safely on board the green at the par-three 17th.

They need to make those with what Clark's just done.

James Gregg
BBC Radio 5 Live commentator

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That could put one hand on the US Open trophy.

Unbelievable stuff from Wyndham Clark, who has a hefty lead but is still attacking, taking a three wood out on the 16th fairway to go for the green in two on the par five.

Who picks it off the turf perfectly and plays a huge high cut that drops just a foot or so from the bunker then bounces up the green to about four feet from the flag.

That putt for an eagle!

Hmmm, a tad heavy-handed from Xander Schauffele as he bumps his third 12 feet past the hole at the par-five 16th.

Tricky putt, left-to-right down the hill. Ohhh, it just misses on the right. Chance gone, you'd have to say.

Sam Stevens showed deft touch out of the bunker to set up a seven-footer for birdie. But he doesn't start it high enough. Stevens has missed so many putts today.