Tuukka Rask made 33 saves for his fourth shutout of the season, and Reilly Smith scored two goals, lifting the host Boston Bruins to a 5-0 rout of the Ottawa Senators on Friday night.
The Bruins are 13-0-2 in their last 15 home games and have won eight straight in Boston.
Robin Lehner made 36 saves for Ottawa, which has dropped four of five.
Nicklas Backstrom had a goal and an assist, and Eric Fehr scored the tiebreaking goal with 5:09 left to lift the host Washington Capitals over the New York Rangers, 3-2.
Cam Atkinson scored in the shootout to lead the Columbus Blue Jackets to a 2-1 win over the host New Jersey Devils.
Jonathan Bernier stopped all three Sabres in the shootout to give the host Toronto Maple Leafs a 4-3 win over Buffalo.
James Neal scored at 1:03 of overtime and the Pittsburgh Penguins beat the host Carolina Hurricanes, 4-3. Sidney Crosby had a goal to help the Eastern Conference leaders win their 13th in 15 games.
Pittsburgh Penguins coach Dan Bylsma said top-line forward Pascal Dupuis could miss the rest of the season with a knee injury.
Detroit Red Wings defenseman Jonathan Ericsson could miss three to five weeks with broken ribs.
The Dallas Stars have put defenseman Sergei Gonchar, out with concussionlike-symptoms, on the injured list.
Carolina Hurricanes forward Jiri Tlusty will miss two to three weeks after having his appendix removed.