Alberta's Kevin Koe improved to 6-0 at the Canadian men's curling championship with an 8-1 win over Brad Gushue of Newfoundland and Labrador.
The Calgary Glencoe Curling Club foursome prevailed despite two hog-line violations by third Pat Simmons early in the game.
Ontario's Glenn Howard and Jamie Koe of Yukon/Northwest Territories were 4-1 with two games to play later today.
Both B.C.'s Jim Cotter and Manitoba's Rob Fowler improved to 4-2. B.C. downed Northern Ontario's Brad Jacobs 7-3 while Manitoba defeated Nova Scotia's Jamie Murphy 10-7.
Nova Scotia was 3-3, ahead of Northern Ontario and New Brunswick's Terry Odishaw at 2-4. Prince Edward Island's Mike Gaudet beat New Brunswick 8-6 for P.E.I.'s first win of the tournament. P.E.I. and Newfoundland were 1-5.
The top four teams advance at the conclusion of the preliminary round Thursday advance to the Page playoff. Ties for fourth are solved by tiebreaker games.