Team World won five of the six games, to take a 9.5-8.5 lead over Team North America. The first team to win 30.5 of the 60 available points will win the WFG Continental Cup.
The Team World women set the tone, sweeping their three games against Team North America, while the men took two of three.
Each team has to throw six shots - draw the button, hit and roll to button, draw the button through a port, raise to the button, runback takeout and double takeout - with each shot scored one through five depending on its success.
Margaretha Sigfridsson beat Team North America's Rachel Homan of Ottawa 24-18, Eve Muirhead defeated Jennifer Jones of Winnipeg 19-12, and Satsuki Fujisawa turned back Erika Brown of Oakville, Ont., 19-13.
"It's six quite easy points there, so it's important to do the singles well, and it turned out well for us," said Sigfridsson, who will represent Sweden at the Winter Olympics in Sochi. "We almost never practise those shots, except the draw. But they're good shots, quite difficult, so it's fun to have that kind of competition."
In the men's singles games, Team World's David Murdoch of Scotland was a 16-13 winner over Team North America's John Shuster of Duluth, Minnesota. Team World's Thomas Ulsrud of Norway doubled Team North America's Jeff Stoughton of Winnipeg 18-9. Team North America's Brad Jacobs of Sault Ste. Marie, Ont., prevented the clean sweep with a 13-11 win over Team World's Niklas Edin of Sweden.
"Definitely a tough afternoon, but we were able to get out of there and we're only down one point," said Team Jacobs vice-skip Ryan Fry.
The teams split the three available points in Friday's early draw.