Darrell McKee of Saskatchewan shellacked George Lennie of the Territories 16-2 on Tuesday night to remain unbeaten at the Canadian mixed curling championship in Iqaluit, Nunavut.
McKee tops the standings at 7-0 through 10 draws at Arniatok Arena.
McKee, from the Nutana Curling Club in Saskatoon, stormed out to a 6-0 lead before Lennie tallied one in the fourth end.
McKee replied with two in the fifth and one in the sixth before completing the carnage with a seven-spot in the seventh.
Earlier in the day, he broke a 4-4 deadlock with two in the ninth and held on for a 6-5 win over Simon Hebert of Quebec.
Northern Ontario's Ian Fisher (6-1) kept pace with McKee by virtue of a 10-7 triumph over Manitoba's Sean Grassie (5-1).
Wayne Tuck of Ontario is 5-2, followed at 4-2 by Nova Scotia's Mark Dacey, who won the event in 2002.
Greg Monkman of British Columbia stands at 3-4.
Hebert, Scott Jones of New Brunswick, Bill Hope of Prince Edward Island and Andrew Mercer of Newfoundland and Labrador trail at 2-4.
Lennie, from Inuvik, remains winless at 0-6.
The round robin concludes Friday morning, with the first-place finisher advancing directly to Saturday's final.
The second- and third-place rinks will meet in a semifinal to determine the other finalist.