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Jordan Spieth is warming to the task now, just as the wind starts to blow. His tee shot at 12 lands on the green and uses the contours well to curl round the back, creep back towards the hole before settling 15 or 20 feet shy of the target.

A fourth birdie in his first nine holes has moved amateur Brian Campbell to four under.

The wind is definitely picking up, which won't be welcomed by the players. Well, not the ones out on the course at least. The likes of Dustin Johnson and Henrik Stenson will be more than happy that a breeze is picking up.

American Tony Finau has propelled himself into a tie for fifth by becoming the latest man to eagle 12.

Spieth's approach shot to 11 was key, giving him a simple putt, which is sinks with ease to move to -1. Could the Masters champ be set for a back-nine charge up the leaderboard?

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Tiger completes a quality up and down at 10 by sinking his putt and saving par. It may not improve his score but it could well be the belief-booster the 14-time major winner needs.

No trio is suffering as much as that of Woods, Fowler and Oosthuizen, who make the turn at a combined +16. But they have talent to spare as Woods shows with a chip from a plugged lie in a green-side bunker at the 10th, which he digs out and lands softly at the front of the green to allow it to trickle down near to the hole. We don't see it as often these days, but he still has genius in him.

Jordan Spieth's second shot to the 11th green is a belter as it lands at the front of the green and curls round to settle a few feet from the hole. Chance for him to improve his current even score.

Ben Martin, currently a shot on the lead after a superb 10-18, starts well on the first with a lovely drive down the fairway. He is one of 34 players currently under par. So it is possible to match this course. Just not very easy.

Thanks Pete. Well, when I left you, this course still had a bit of moisture in it and Dustin Johnson and Henrik Stenson had carded very impressive 65s. But Chambers Bay is dry as a bone now and it is dishing out some punishment. Poor Rickie Fowler has been hammered in the last four holes. He manages to find the fairway at the 10th, though. As does Tiger.

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At least Danny Willett's birdie putts are going within a foot. On the ninth, Tiger's birdie putt leaves him with a couple of feet for par, but this time he rolls it in and he reaches the turn four over.

What has happened to Rickie Fowler though? He has imploded. A triple-bogey six and he is eight over at the turn. I'll repeat that. Rickie Fowler is eight over after nine holes. While I try find out how that happened, here's Phil Dawkes to see you through to the close...

We move on to Danny Willett and he's shaking his head again. A third successive birdie putt fails to threaten the hole. He will be encouraged by his tee to green play but he needs his putter to get hot and quickly. Two under after 12. However, his next five holes are all 475 yards or further and only one is a par five...

The Puget Sound, the water that borders the course, has looked like a millpond all day but it's just starting to break a little on top, an indication that the wind is getting a little fresher. That's the last thing the players need on top of crusty greens.

I've just watched a replay of Jimmy Gunn's tee shot on the short 15th. He landed his ball in a space between two bunkers that could only be five yards wide and that allowed the ball to funnel down right towards the hole. Great shot-making.

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Another tap-in par for Danny Willett. But that means he's missed another birdie chance - this time from 10 feet - but two under after 11 and going along just swell.

Scotland's Jimmy Gunn responds to dropping a shot on the 14th in fine fashion, pinging his tee shot to a couple of feet on the short 15th and nonchalantly knocking in for birdie to get back to two under.

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Australia's Jason Day snakes in a birdie putt on the ninth and he's suddenly up to two under. Playing partner Justin Rose from a similar angle takes two for par.

Tiger Woods rattles his birdie putt by on the eighth and he's staring at a three-footer for par. He starts it outside the left-edge of the hole and it finally curls in.

Rickie Fowler's challenge is fading. He is playing with Tiger and opened with five pars. But a run of double bogey, bogey, double bogey has dropped the American to five over.

There's a bit of movement at the business end of the leaderboard. Ben Martin has birdied 16 to get to four under, one behind joint leaders Henrik Stenson and Dustin Johnson.

South Africa's Branden Grace is three under after nine, while amateur Brian Campbell is three under after six. Three pars and three birdies. Simple golf.

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Bizarre scenes on the par-five eighth. Tiger, with the ball about four feet below his stance, hacks out of the rough. The ball flies over the fairway and ends up in the rough on the left of the fairway. It's the club everyone is watching though as it slips out of Tiger's hands and ends up over his shoulder and 20 feet behind him.

But he has a shot to the green with his third and it's a great bit of scrambling, the ball coming to rest 20 feet from the pin - birdie anyone?

Danny, Danny, Danny...another birdie chance for Mr Willett. This time he's on the first and he's about six feet away. His putter kisses the ball with the lightest of touches and it meanders millimetres wide. He's two under after 10. The same score as Scotland's Jimmy Gunn. Par, birdie, birdie, par. Nice.

BBC Radio 5 live

BBC Radio 5 Live's Christopher Jones at Chambers Bay: "Although the course hasn't been the minefield many were predicting ahead of the tournament - the likes of Dustin Johnson and Henrik Stenson made the most of the helpful morning conditions - there has been a fair bit of consternation from the players here over the state of the Chambers Bay greens. A diplomatic Rory McIlroy says they 'aren't the best"', while Colin Montgomerie was a little more forthright when he spoke to 5live after his impressive round of 69: 'The green surfaces for a major championship are very poor," he said. "They are very, very poor surfaces. No one is going to putt well consistently on these greens.'"

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Jordan Spieth has a straight one for eagle on the eighth. It can only be four feet but he's pushed that. A birdie it is then and back to level for the Masters champion. Justin Rose's birdie attempt sneaks by and he is also level par.

We've not heard from Justin Rose for a while. Here he is on the par-five eighth. He's had to lay-up short with his second and flicks a wedge to 15 feet with his third. A birdie chance and an opportunity to get back to one under.

Back on the tee and Tiger Woods sends the marshals scrambling down the bank way right. He slams his driver in frustration and then points right, no further than that. That's close to 60 yards off the fairway. The marshal plonks a pink flag next to his ball. I guarantee if you or I had hit that, it would be a lost ball.

PGATour.com writer Brian Wacker on Twitter:, external lowest score shot in competition at #ChambersBay before today was 68....by the same guy who shot 66 and is one back (Patrick Reed).

Tiger Woods is having a solid seventh hole. Decent drive, decent iron, decent putt and tap in for par. Danny Willett two-putted for birdie on the 18th and the Englishman is two under halfway through his round.