Brier champion Jeff Stoughton finished the round robin with a flawless record after beating Jim Cotter 6-2 at the GP Car and Home World Cup of Curling event Friday.
The Winnipeg skip cruised by Cotter, from Vernon, B.C., with two points in both the fourth and fifth ends to earn his fifth-straight victory.
Stoughton will be the top seed in the knockout rounds, while Brad Gushue of St. John's, N.L., earned the second seed with a 4-1 record.
Edmonton's Kevin Martin, Glenn Howard of Coldwater, Ont., and Mike McEwen of Winnipeg each finished 4-1 to earn the third, fourth and fifth seeds, respectively.
Edmonton's Kevin Koe holds the closest-to-the-button tiebreaker among a pack of five teams with records of 3-2, automatically advancing him to the quarter-final.
Meanwhile, a tiebreaker draw will be held Saturday morning to determine the final two teams that advance to the quarters.
Toronto's John Epping takes on Greg Balsdon of Kingston, Ont., while Sweden's Niklas Edin plays Edmonton's Randy Ferbey in the other tiebreaker.
Stoughton and Gushue await the winners of the tiebreakers while the other quarter-final match-ups feature Martin against Koe and Howard against McEwen.
In the final draw, Koe defeated Saskatoon's Steve Laycock 6-3 in seven ends. Edin edged Martin 3-2 to keep his playoff hopes alive, while Howard beat hometown favourite Brad Jacobs 3-2.
Ferbey was upset 5-4 by the previously winless Dale Matchett of Bradford, Ont., while McEwen's undefeated run ended with a 9-8 loss to Edmonton's Robert Schlender.
The event, which runs through Sunday, is the first leg of the Capital One Grand Slam of Curling series.