US PGA LIVE: Day 1 updates and scores from Valhalla

1. X. Schauffele -9 (62)

2. S. Theegala, T. Finau -6 (65)

4. T. Hoge, T. Kim, T. Detry, C. Morikawa, R. McIlroy, B. MacIntyre -5 (66)

10. A. Noren, A. Eckroat, S. Scheffler, B. Kohles, B. Koepka, T. Moore, M. Hubbard -4 (67) M. McNealy (16), A. Tosti (15)

That's all from me today, folks. I will see you again tomorrow. 

Scheffler -4, Clark E, Harman, +1 (F)

Well, that was an interesting watch. Scheffler walks off four under, but in all honesty, he didn't really have his best stuff. 

It's scary to think that's what he can do with his "B game". 

For Clark and Harman, it was a bit of a grind. Harman never really got it going, and Clark's frustration was clear on the 18th green. 

They're not out of it, but plenty of work to do tomorrow if they want to be near the top of the leaderboard on Sunday. 

Rahm -1 (F)

That is a remarkable show of grit and determination from Jon Rahm.

At one point today, he looked like he could be struggling to make the cut; however, a steely back nine sees him heading into Friday under par. 

Sat at four over through six, I feared for the worst, but as the old saying goes, form is temporary, class is permanent. 

Mickelson +3 (F)

After a plethora of errors that included a shank, Mickelson walks off 18 with a double bogey to card a three-over 74.

A day to forget for the six-time major champion.

Rahm E (16)

Back to level par for Jon Rahm.

It's been a struggle for the Spaniard, but he's fought hard on the back nine to get back to where he began the day. 

He will inevitably be disappointed with his day's work, but there's still plenty of golf to be played. 

Kim -5 (F)

Kim finishes with a par to card an excellent five under 66 on day one.

Aside from one or two errant shots, the young South Korean has looked in fantastic form today.

Who wouldn't love to see him in contention on Sunday?

Rahm +1 (16)

As an iron hurtles down the fairway, we finally see Rahm's frustration surface.

With a tee shot that was nothing short of perfection, Rahm's approach, unfortunately, missed short and left, a moment that broke his patience.

Despite the errant approach, he still managed to get up and down to avoid a dropped shot.

Fowler +1 (16)

Having only made one par on the front nine, Fowler has carded seven in a row on the back.

It's been a strange round for the popular American. 

Scheffler -4 (15)

Is there anyone better at bouncing back after a bogey than Scottie Scheffler?

I don't think so. After a pinpoint approach that almost spun off the green, Scheffler holes an excellent putt to make amends for his mistake on the 14th. 

I did say there would be scoring opportunities.

Hoge -5 (F)

Eight birdies today puts the American right in the mix.

His iron play has been exceptional today. 

He's tied for fourth with McIlroy and MacIntyre.

Scheffler -3 (14)

A sloppy missed putt on 14 sees Scheffler drop a shot and move back to three-under.

That 14th hole is an absolute beast.

Scheffler -4 (13)

Another birdie drops for the world No.1 as he moves to four under for the day. 

Ominous signs for the rest of the field, as Scottie has barely broken a sweat today and still looks as dangerous as ever. 

He will have plenty of good scoring opportunities heading in once he's past the 256-yard par-three 14th. 

Rahm +1 (14)

If there's one thing Rahm won't do today, it's give up.

He's shown real grit on this back nine with back-to-back birdies to make it back to +1.

He also appears to have figured out the pace of the greens now.

Hopefully, he can carry this momentum into the final few holes.

Morikawa -4 (14)

He's on a roll! Morikawa's three consecutive birdies have catapulted him to a thrilling tie for 7th place at four-under.

Really impressive stuff from the young American.

We know how good he is with his irons, but his putter has also really shown up today.

Conditions are ideal for scoring right now, so I wouldn't be surprised to see him make a couple more before his day's work is done. 

Morikawa -3 (13)

The two-time major champion takes advantage of the short par-four 13th to card his fifth birdie of the day.

After a solid approach shot, his putter took care of the rest, sinking a tidy 15-footer to move to three-under. 

Kim -4 (14)

After back-to-back birdies, Tom Kim finally slips up on the par-three 14th.

After leaving his tee shot short, he then chunked his chip into the bunker before managing to get up and down to only drop one shot. 

Looking to do some serious repair work to his scorecard, Rahm went pin hunting on 13 and narrowly missed out on a spectacular hole out from the fairway.

He should tap in for birdie to get back to +1. 

Morikawa -2 (12)

Morikawa holes a lovely putt on the 12th hole to move to two-under for the day.

GolfMagic's resident videographer, Willy Woods, who is also the chairman of the Collin Morikawa fan club, will be absolutely delighted. 

Rahm +3 (11)

Another disappointing bogey for Rahm as he fails to get up and down on the par-three 11th. 

We almost saw him stab the ground with his putter, but he managed to keep it together. 

It's been pretty ugly stuff from the LIV Golf megastar so far. 

Kim -4 (12)

Tom Kim is going about his business very nicely.

A birdie on 12 gets the young gun to four-under for the day, and there's plenty of time left for him to keep charging up the leaderboard. 

Rahm +2, Young -2, Fowler -1 (10)

The Spaniard makes another birdie to get back to +2 for the day.

Young also picks up a shot, and the group's momentum is certainly trending in the right direction after a rocky start. 

Detry -5 (10)

Belgium's Thomas Detry joins fellow Europeans McIlroy and MacIntyre at five-under following three birdies in four holes around the turn. 

Fowler +1 (9)

It's been an interesting round so far from Rickie Fowler.

He's only made one par but sits at +1, thanks to a birdie on the 9th.

His turbulent round has featured three bogeys, four birdies a double bogey and one par.

Fitzpatrick E (9)

Fitzy makes the turn in level par thanks to a nice birdie on the 9th, backing up his excellent eagle on the 7th.

If he can get to three-under, he'll be right in  the mixer.

Rai -3 (13*)

The Englishman is quietly going about his business, and thanks to a birdie on the fourth (13*), he finds himself in the top 10 at three under.

He's currently tied with a number of players, including Viktor Hovland, Cameron Smith, and Martin Kaymer.