Great Britain's women's curlers equalled the Olympic record score for the second time at Sochi 2014 as they thrashed Japan 12-3.
They rounded off the win by stealing the seventh end by five points, matching a feat only achieved by Canada's men in 1988.
The round-robin victory mirrored the scoreline in their six-end win over United States on Tuesday.
Meanwhile the GB men beat Denmark 8-6 to go top of the table.
They had been 5-1 down in the match but came back strongly to lead 7-6 going into the final end. It looked as though Denmark were going to win but a mistake with the final stone handed GB the victory.
David Murdoch's team have won five out of their six matches, with three more to go, although they play defending Olympic champions Canada on Saturday.
Eve Muirhead's team are joint-third in the table after five of nine matches.
The top four teams after the group stage will progress to the semi-finals.
"The momentum has been starting to build and we continued it today," said Muirhead.
"None of these teams are going to be easy, we knew Japan were going to come out sharp and we knew we had to come out firing from the start and that is exactly what we did.
"The girls are all playing really well, setting me up to play these shots - it was a good solid team performance."