Eve Muirhead gutted after Great Britain defeat to Sweden in curling at Winter Olympics

Britain trailed 6-4 going into the ninth end but levelled to take the match to an extra end.

The Swedes had the advantage of the hammer but Muirhead had the chance to make it difficult for them with Britain's final stone.

But the stone was voided, leaving the Swedes the simple task of clinching victory with the hammer.

It was not immediately clear if Muirhead had been penalised for not releasing the stone clearly before the red line - known as hog lining - or whether she touched the stone twice leading to her being penalised.

Either way her final stone was taken off the rink leaving the Swedes to wrap up the win with the hammer.

She later took to Twitter, positing a photo of the incident which showed her hand was clear of the stone and the stone was behind the line.

Muirhead told BBC Sport: "The red light came on so that's counted as a hogged rock, so that has to be taken off.

"When you see the replays in the stadium it looks like it was. It's hard to take and it comes down to inches and millimetres.

"It's the first stone I have ever hogged in my life and when it comes at a time like that.

"We have had the stone tested and it's fine so there's nothing we can do, we have to move on.

"It's the story of our week so far. When something like that happens it makes it very tough to take and it's gutting that it finished that way."

Coach Glenn Howard added: "I've only seen one replay and it looks like Eve has let go of the rock prior to the hog line and the light went off.

"It's a horrible way to finish the game. I've never witnessed Eve Muirhead have a hog line violation ever."

The defeat leaves Eve Muirhead's rink with three wins out of six so far with three more round robin matches to come - against Switzerland on Monday, Japan on Tuesday and Canada on Wednesday. The top four sides qualify for the semi-finals.

Great Britain's men's curling team kept alive their chances of qualifying for the semi-finals after a tight 7-6 win over Italy at the Gangneung Curling Centre.

The pressure had looked to tell on skip Kyle Smith who slammed his broom in frustration after dropping two points in the eighth end to allow Italy to haul back to 5-5.

But after being forced into another extra end, Smith took advantage of holding the hammer to claim the point required and drag his team to three wins from their six games so far.

Meanwhile, James Woods vowed to "ski for ever" after coming agonisingly close to claiming Great Britain's historic fifth medal in Pyeongchang.

Woods finished fourth in the men's ski slopestyle, just 1.4 points off bronze, meaning Britain must wait to exceed their current record-equalling haul of four shared with Sochi 2014 and Chamonix 1924.

The Sheffield 26-year-old nailed a score of 91.0 on his second attempt to go into the third and last run of the men's ski slopestyle final in the bronze medal position.

But American Nick Goepper overtook Woods on the final run to take silver behind Oystein Braaten of Norway.

Woods said: "I put in my best effort and I went for broke. That was the most incredible competition - it's a brilliant course and we had the perfect weather and conditions and everyone brought their A-game.

"I don't want to blow my own trumpet about my run. If people like the look of that, there's so much stuff out there. I think we did a great job. I think it was a perfect show. I'll ski for ever, baby."

In the men's two-man bobsleigh event, pilot Brad Hall and brakeman Joel Fearon were seventh after two runs.

Germany's Nico Walther and Christian Poser lead with the concluding two runs to follow on Monday.

Austria's Marcel Hirscher won a second Olympic gold medal with victory in the men's giant slalom at Yongpyong Alpine Centre.

Hirscher, who won the men's combined event on Tuesday, won by 1.27 seconds from Henrik Kristoffersen of Norway. Bronze went to Alexis Pinturault of France.

The 28-year-old has 55 World Cup wins and his two gold medals here strengthen his claim to be regarded as the best male ski racers of all time.

Martin Fourcade of France won his second gold medal of the Games in the 15km mass start biathlon, while Norway won the men's 4x10km cross-country relay.

Oleksandr Abramenko of Ukraine won the men's aerials and Nao Kodaira of Japan won the women's 500m long-track speedskating.