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

"He's in real trouble there. That was real poor distance control by Justin."

Rose has around 15 feet left for bogey, this could be a double... it is. Rose is furious and pretends to smash the ball in anger but sensibly withdraws.

Somehow Matt Jones got up and down from the depths of the rough adjacent to the third tee. That's probably a bonus par given the state of his drive. The lead is two again as Jason Day taps in.

Paul Casey gets his round to one under for the day in some style, he had just four inches left after a shot from 96 yards. Rory McIlroy stands dead still over his putt after it slides away. He stares the ball down as birdie evades him on 14.

So a bogey on two, what have you got Jason Day?

Have some of this. He makes a mockery of the 193 yards that separate the third tee and pin with a wonderful strike. All of one yard left at most. So, so good.

His playing partner Matt Jones is in trouble - missed the green.

It's still on for Rory McIlroy as he sinks his putt on 12 - back to five under. a few more of those are needed down the stretch. Jason Day is bogey all day on two, those sand travails were never going to end well. David Lingmerth is on the birdie board on three and just four back.

What's this from Charl Schwartzel? Hitting the flag from a long way out. You cheeky rascal. Misses the birdie putt though. You've got to press those home.

Image source, Getty Images

I'm not sure about you but sometimes, just sometimes, it's nice to see a professional golfer chip from one bunker to another. Some of us do that each time we play unlike these sand experts.

Jason Day goes from one sand trap to another here on the par five second. So to his fourth shot, it's right against the lip of the bunker.... dig deep Jason... he's out but has 25 feet for par. The lead could be extended here.

You get the feeling these holes will determine whether Rory McIlroy is an also ran or not tomorrow. He's eight back now despite that brilliant start. Quality stuff on 13 though as he finds the green superbly from a long way back. This six footer must drop for birdie...

Justin Rose cannot repeat the feat he produced on one as his long putt on the second will only leave a tap-in par. He is playing with David Lingmerth who also has a dig for birdie from range, this ball is going underground... no. It loops around the cup and that's par only.

Our leader is in the middle of the second fairway and he will aim for the green in two - it's a par five of course - but he's well wide and spectators duck. Don't be fooled though, these magicians can still make birdie from there and not wanting to be left out, Jason Day lands in a bunker to the left of the same green.

Phil Mickelson reacts to his six-under-par 66: "I feel like I was close. I still had three three putts and some things I have to clean up. The golf course is very gettable, the greens are receptive. You can make a lot of birdies here. I think we will see a lot of low scores in the afternoon.

"I haven't been at my best for some time and I'm slowly coming back. Rounds like these help. It's disappointing I'm not quite there yet. Each round I seem to hit more good shots and if I'm patient enough it will come back."

Oh Rory, Rory, Rory. A three putt at this stage is not good.

Image source, Steve Tooker

We admire your commitment Steve. Keep the tweets coming as you take in round three ladies and gents. Who will win? Tweet #bbcgolf.

Matt Jones - how are the nerves? What nerves. His second shot is measured to perfection and leaves a great birdie chance on one. Jason Day follows him in to leave a good chance too. To Spieth on three, off the tee... rock solid onto the green - 20 feet left. On the second... Anirban Lahiri and Tony Finau bank birdies after brilliant approaches.

Day and Jones convert - birdies. Birdies everywhere.

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

"That's exactly what you want to do. An unexpected birdie after an errant tee shot so a bonus for Justin Rose."

No... he can't, can he... oh Justin Rose. He wags his finger as a gigantic putt drops on the opening stretch. That was all of 30 feet, maybe even more. What a start.

On the tee, our leader, Matt Jones.

Smashes into his drive, it's a big draw and well placed. Jason Day alongside him - two Australians - takes two practice swings and shakes out his left hand... swish. A little draw, fairway all day.

There are a bunch of players stacking up behind our leaders.

Image source, Getty Images

South Africa's Charl Schwartzel and Branden Grace reach seven under through 11 and seven holes respectively. India's Anirban Lahiri birdies one to reach eight under.

What can Rory McIlroy produce with his third shot on the par-five 11th? Not bad, not great, an outside birdie chance as a result of his chip from near a bunker - some 20 feet left.

We have a lady announcing players as they arrive on the tee box who sounds a little like a computer in her delivery. "On. The. Tee. Justin. Rose."

Still, she's very clear, as is Rose as he screams "FORE RIGHT" after his strike. A nice break though and he'll be in the rough but not hampered by anything else.

Now can Rory McIlroy get his back nine off to a birdie start? He has around 15 feet, a left-to-right breaker... looks good... in the left side of the cup.

Can he get everything back in kilter again?

We have a bit of a steamer on our hands in Branden Grace. He downs a gorgeous putt on seven from range for birdie. That's three of those today.

Image source, Getty Images

When play resumed in round two earlier today Jason Day briefly led on 10 under but leaked a shot at the last hole of his second round to fall back a stroke as Matt Jones pushed on to -11.

This is Day's 20th major and a top 10 finish would give him a stunning 50% record of finishing in the top 10 in those events. This year has been a good one so far, with two wins in 15 PGA Tour events.

Asked if this is the best his game has ever felt Day told Sky Sports: "By far. It's hard to describe the feelings going through my body right now. Everything feels very calm."