Quite simply, Britain are in the brown here. Three Canada stones in the house, spread wide apart. Imagine a 7-10 split in bowling, but more of a 7-10-7 split. What can Dave Murdoch do? Stone down the right, sweepy sweepy. Clash with the front GB stone, but still one Canadian taken out. However, Canada have a simple chance for three points.

Image source, Reuters

More mess for Dave Murdcoch to clean up. Two stones in hand. He bites the glove on his right hand to remove it, sliding up the ice as he does. Yellow brick sent down the left, removing one of Canada, who could till pick up as many as three points here.

Steve Cram
BBC Sport curling commentator

"We're hanging on here, and we have not played well so far - there's no disguising that fact."

Greg Drummond for Britain, looking for red carnage. Not perfect, but a decent result. Three stones evicted from the house. Canada in charge, though.

Jackie Lockhart
2002 world curling gold medallist on BBC TV

"My heart bleeds for these Team GB guys. They're nervous, they're forcing some of their stones and they just need to relax. Come on guys - let's not panic."

Trouble here, four red stones around the button, lying dormant to a soundtrack of busy Canadian chatter. Four Canadian stones to come, three for GB. Here comes Ryan Fry. Slow rotation, drifting left to right. Five in the house. If this was snooker, Great Britain's may be looking at some sort of hit and hope.

Anna Thompson
BBC Sport in Sochi

"The British fans are a knowledgable bunch and there was muted applause for David Murdoch's one point on the second end. They knew he had the opportunity to take two but he didn't quite make it."

There are three sheets in the Ice Cube, lined up like pitches on a cricket square. Except made of ice. And 45m long. "Line is good," says British second Scott Andrews. Approaching halfway, busy house. Three red of Canada, two yellow of Britain.

Josh Puttock:, external A bit of curling nudity there, oh the cheekiness!

Ross Aller:, external I can't believe I've structured my day around watching the GB men's curling team going for gold! What has happened to me?!

Third end begins, Canada with the hammer and the chance to extend their lead. Question. Why on earth is Canada's Ryan Harnden wearing a black cap? You're indoors, mate. No need.

Image source, Getty Images

Jackie Lockhart
2002 world curling gold medallist on BBC TV

"I'm really glad we got a one there, because I was seeing the women's semi-final when at one stage we were 3-0 down. But the boys did well there, and as long as we can keep Canada to a one lead on this end..."

Matthew Pinsent
BBC Sport reporter in Sochi

Matt and Marion Murdoch, parents of Team GB skip David: "We're calm. We've been doing this for 20 years. If he's got the last stone to win he'll do it."

Slide on the haunches, tongue poking out in concentration. Will it come enough, is there enough curl? Brick collision. Canada sweep the GB stone, Britain sweep the Canadian stone. Which will travel further? It's the yellow of Britain, meaning Murdoch's men take only only one point. He puts his head to one side in disappointment. Close, but not quite right.

Now then, business end, if you'll pardon the pun. Murdoch with a curl right to left as we look to remove the red Canada stone and take two for Britain...

Chance for GB here. Action on the right of the scoring area as we look down on it. Could be the opportunity for the men in white to get those two points back.

BBC Radio 5 live

Team GB women's curlers Eve Muirhead and Anna Sloan on 5 live Sport:

When those 40lb bricks scrape on the ice, the grinding noise made really helps you imagine what it must have been like to curl on a frozen lake. Anyway, quiet in the Ice Cube, applause following as GB get two at the front of the house.

Anna Thompson
BBC Sport in Sochi

"I was chatting to Team GB chef de mission Mike Hay at lunch. He was coach when Rhona Martin and her team won gold in 2002.

"'There's no bigger game in curling than GB versus Canada'," he told me.

"The game was invented in Scotland but Canada love playing it and thousands turn out to watch matches."

Image source, Getty Images

What's happening here? Britain's Michael Goodfellow is pulled over by the umpire. Now he's stripping off! Turns out Goodfellow was wearing a shirt that didn't have his name on the back. He's ordered off to change it, going topless at the edge of the ice. A chilly wardrobe malfunction.

Vincent Torr:, external Working in Parliament, but everyone is watching the curling! Go Team GB!

Ralph Brooker:, external C'mon GB. Make us Kings of Planet Granite.