Australian Cam Davis rolls in his fifth birdie of the day at the first hole, his 10th, to join the group in a tie for second on four under.

Just the one bogey today for Davis - one of the few players to get through the Green Mile under par, showing how good he's playing.

JJ Spaun has been ticking along nicely but a bogey on the 17th sees him cough up a shot.

The 34-year-old has finished in the top 10 three times this season at the Sony Open (third) and the Cognizant Classic and The Players Championship, where he was runner-up.

At last a birdie for Justin Thomas at the short par-four eighth, but it took a wonder shot out of the rough after he missed the green with his drive.

Thomas produced a wonderful flop shot, blazing the ball miles into the air and landing it soft on the green before it trickled down to just a few feet for his three.

Collin Morikawa also makes a three, for his second birdie in a row to get back to level par.

Bryson DeChambeau hits a decent tee shot down the par-three sixth but definitely does not get the reward it merits as his ball trickles back off the green onto the apron.

Can he chip this in? Nope. He'll have a six-foot putt to retrieve a par.

Viktor Hovland also has to do a bit of a salvage job after leaving himself a long 40-foot putt for a birdie. He comes up six feet short and like Bryson, dunks his putt in the hole.

Oh hello, Aaron Rai! He's now just one shot off the lead!

The par-four 16th is one of the toughest holes on the golf course but Rai leaves it with a birdie after chipping in from off the green.

A welcome bonus.

Former Masters champion Adam Scott has reeled off three straight birdies to fire himself into contention.

Playing partner Tyrrell Hatton is just a shot behind him after birdies on seven and eight making it a nice start for the Englishman.

A magical touch from Ludvig Aberg, whose eagle putt from about half a mile away (not quite that far, but you get the picture...) finishes about three feet from the hole.

A gimme birdie for the Swede.

Wolverhampton's finest, Aaron Rai, held the lead early in the first round of the Masters last month before finishing in a tie for 27th place on his debut at Augusta.

He's started superbly at Quail Hollow, with three birdies in his first six holes.

Rai is one of the players who started on the 10th, so he's just entered the "Green Mile" stretch of 16, 17 and 18.

Great par save by Justin Thomas, who takes a drop from the water and wedges it from 97 yards to 14 feet before rolling in the putt for a five - some effort that one!

Collin Morikawa plays the hole a lot better as he finds the back of the green in two, hits a long eagle putt and knocks in the birdie.

The TV coverage shows a group of people working furiously to smooth out the sand in one of the greenside bunkers at Quail Hollow.

Then we see the reason why - a huge turtle, which had left its footprints all through it!

We don't get those down the local pitch and putt near where I live...

Justin Rose has been having an Indian summer at the majors with runners-up finishes at the past two - the 2024 Open Championship and four weeks ago at the Masters.

Hopes of repeating the feat here have got off to a tricky start.

The Englishman is two over through three holes.

Ask Me Anything

Image source, Getty Images

BBC Sport's Ask Me Anything team have been asking for your questions...

The latest is one on the sport's laws around putting.

Alan in Bristol asked: In golf, is it legal to use the back of my putter to make a stroke?

Yes, it is legal to use the back of a putter to make a stroke.

As far as the laws of golf are concerned, there is nothing preventing the use of any part of the clubhead.

In the R&A's Rule 10.1a Fairly Striking the Ball and Clarification 10.1a/1, “a player may play a stroke with any part of the clubhead, provided the ball is not pushed, scraped or scooped.”

Oh dear. Bryson DeChambeau is playing his third from just off the right off the fifth green but he stubs that one and it stops well short of the pin.

A big par putt coming up from 13 feet...which he sinks.

We talked about Justin Thomas sinking fast before, and now he's gone and found the water on the seventh!

It's a par five so he's got a shot to play with, but if he's not careful his chances could be sunk already.

Image source, Getty Images

It's been a solid, unspectacular start for Jordan Spieth in his bid to complete the Grand Slam.

The American bogeyed the first and has just registered his fifth straight par - his birdie putt on the sixth from about 25 feet is tickled towards the hole but pulls up a little short.

Very much a case of as you were as this trio walk off the par-three fourth, albeit Bryson DeChambeau is just six inches off chipping in for birdie.

Gavin Andrews
BBC Sport NI at Quail Hollow

Tough morning for Rory on the way to a three-over-par 74.

He skipped media post round and by all accounts is heading to the practice range - with temperatures approaching 30 degrees!

He won the 2017 PGA Championship here at Quail Hollow, but Justin Thomas won't be winning it this year unless he can stop taking on water like this.

A bogey at the long par-three sixth hole means he's four over now in what is official a horror start for the two-time Wanamaker Trophy winner.

Dustin Johnson also bogeys six to drop back to level par, while Collin Morikawa has also hit reverse recently with successive bogeys on four and five.

Ludvig Aberg bounces straight back after that bogey at the fourth with a birdie on the par-four fifth - he's back to level par.

And Patrick Reed is one shot better off, his second consecutive birdie taking him into red numbers for the first time today.

Image source, Getty Images

Scottie Scheffler and Xander Schauffele both made double bogeys on the 16th after getting mud balls despite hitting the middle of the fairway.

The world number one was not happy with the PGA of America's decision not to have preferred lies:

"It's one of those deals where it's frustrating to hit the ball in the middle of the fairway and get mud on it and have no idea where it's going to go.

"I understand it's part of the game, but there's nothing more frustrating for a player. You spend your whole life trying to learn how to control a golf ball, and due to a rules decision all of a sudden you have absolutely no control over where that golf ball goes.

"But I don't make the rules. I just have to deal with the consequences of those rules. I did a good job of battling back today and not letting a bad break like that, which cost me a couple shots, get to me. Did a good job battling after that and posting a decent score."