The Canadiens completed a weekend sweep Sunday as they defeated the hapless Buffalo Sabres 2-0 at the First Niagara Center. Dustin Tokarski was a surprise starter in goal, but he made 29 stops for his first NHL shutout and he ran his record with the Canadiens to 2-0. The win allowed the Canadiens to move into second place in the Atlantic Division with a one-point edge over the Toronto Maple Leafs, who dropped a 4-2 decision to Washington. The Canadiens are two points ahead of idle Tampa Bay but the Lightning has two games in hand. Good start for Canadiens: Montreal grabbed a 2-0 lead on first-period goals by Dale Weise and Brendan Gallagher. The Canadiens got the bounces on both goals. On the first goal at 14:41, David Desharnais lifted a backhander into the air and Alex Galchenyuk got his stick on the puck before Weise directed it behind Jhonas Enroth. The play was sent to the situation room in Toronto where it was determined that Galchenyuk did not make contact with a high stick. Gallagher was credited with his 17th goal at 16:07 when Enroth made the save, but the rebound went in off Buffalo defenceman Chad Ruhwedel. Lieuwen makes debut: Buffalo backup goaltender Nathan Lieuwen made his NHL debut in relief of Enroth, who was shaken up when Gallagher plowed into him at 16:09 of the second period. Enroth stopped 19 of 21 shots, Lieuwen, who was called up on Sunday to fill in for the injured Michal Neuvirth, stopped the 10 shots he faced.