I tell you what, he's done well to get as near to the green as he has. I'm told he's there in five - just at the front, near a bunker. DeChambeau looking at a seven, minimum.

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

"DeChambeau is looking at an eight or nine right now."

That's four attempts at dropping I've counted for DeChambeau. He'll get arm ache. The caddie looks at his yardage book. I guarantee there's nothing in there that will tell him how far away he is. A map would be more useful.

Iain Carter
BBC golf correspondent at Augusta National

"It will be very slippery from there for Spieth. It will be very hard to get up and down from that position."

Genuinely no idea what's happening with DeChambeau. He's now dropping the ball on a path. He could be in Atlanta.

DeChambeau is out next to what looks like a garage, so far from the fairway that he has to go through a jungle to get back to civilisation. It's like a scene from Ace Ventura: When Nature Calls. Lord knows where he'll play that from. Meanwhile, Spieth's approach is on the beach.

Lee Westwood, who is two over par, on Sky Sports: "That is as hard as I have seen Augusta. The pin positions were tricky, it is playing long, the wind is strong and swirling and the greens are getting quicker every day.

"It was great, very emotional for Tom, it was nice to walk up 18 with him.

"I asked if he remembered the first time we played together in 1996 and I can’t believe he didn’t, I did, and that’s what it means to all the players."

He's done it again! "No. Way" he says. Way, Bryson. Big way. It's left again.

Big news. Bryson DeChambeau has lost his ball on the 18th. After a belting round, the amateur is struggling at the last. I didn't see the shot, but I'm told it went way left. Well, it must have done if he can't find it. Back to the tee. That'll be his third.

Paul Casey isn't finishing well, following DeChambeau into the trees on the left of the 18th fairway. Spieth is determined not follow them, staying right and just on the good stuff.

Image source, Getty Images

While we're at it, is Bryson DeChambeau a stage name? He could be doing a turn in Las Vegas. Or Blackpool. I bet his real name is Barry Chambers.

Alistair Bruce-Ball
BBC Radio 5 live sports commentator at Augusta National

"I know we say Jordan Spieth is ice cool but when things don’t go right you really see him go at himself and you saw it there."

Unless Bryson DeChambeau has something to say about it. Big clutch putt at 17, saving par. He's the man who could separate Spieth and McIlroy tomorrow. He shares second with Rory at three under.

The lead was five, now it's one. Jordan Spieth was eight under at one point, now he's back to fours. He's only one in front of Rory McIlroy. We're set for that dream pairing tomorrow...

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

"This is huge. This is not an easy putt for Spieth to maintain his two shot lead."

DeChambeau is at it again, as if he isn't supposed to play bad strokes. Who is he blaming there? Chip up and past the pin, a tricky one back for par. I'm not sure I like his attitude. Wind your neck in... 

Image source, Getty Images

Spieth will have trouble making par at 17, looking accusingly at the wind (if you can look at wind) when his chip barely flops on to the green. Keep watching, Rory...

Annaliese Moss: My husband is in the pub with no signal so I'm having to text him updates, he's backing DeChambeau..#goodwifeskills, external