Callahan, who had nine previous two-goal games and two four-points outbursts in the NHL, scored twice in the first period when New York built a 2-0 lead, added another in the second when the edge grew to 4-0, and netted his 20th of the season in the third with a goal off his skate.
New York got top-line forward Marian Gaborik back in the lineup for the first time in seven games following a concussion. He didn’t get on the score sheet, and it didn’t matter. Mats Zuccarello added two goals and Artem Anisimov also scored for the Rangers, who snapped a four-game losing streak at home while wearing their road whites at Madison Square Garden for the first time this season.
Callahan, who added an assist in the third period, has 10 goals and six assists in 16 games since returning from a broken hand on Feb. 1. Henrik Lundqvist was sharp, making 24 saves in his NHL-leading ninth shutout.
Capitals 3 Panthers 2, OT: In Sunrise, Florida, Alexander Semin scored 48 seconds into overtime for Washington.
Nicklas Backstrom and Boyd Gordon also scored to help the Capitals take the Southeast Division lead.
The Capitals, the division champion he last three years, are in first place for the first time since they shared the top spot on Jan. 17. Washington has 82 points, one more than Tampa Bay heading into their showdown Monday night in Tampa.
Flames 3 Predators 2: In Calgary, Jarome Iginla scored on a penalty early in the second period to become the 10th NHL player to reach 30 goals in 10 straight seasons, helping streaking Calgary beat Nashville.
Mike Gartner and Jaromir Jagr share the record with 15 consecutive 30-goal seasons. The 33-year-old Iginla has 471 NHL goals, two behind Denis Savard and Alex Mogilny for 49th on the career list.
Iginla was awarded the penalty shot when he was tugged from behind by Sergei Kostitsyn on a breakaway on Pekka Rinne . On the penalty shot, Iginla slid the puck through Rinne’s legs to tie it at 2.
Canucks 3 Ducks 0: In Anaheim, California, Cory Schneider made 26 saves for his first career shutout, Manny Malhotra scored two goals and NHL-leading Vancouver won consecutive games for the first time in four weeks.
NHL scoring leader Daniel Sedin got a power-play goal in the third period for the Canucks, who had alternated wins and losses for a full month before back-to-back victories in Southern California to kick off a five-game trip. Schneider capitalized on a rare chance to play in place of starter Roberto Luongo , earning his first shutout in 29 career appearances.
Sabres 3 Wild 2, OT: In St. Paul, Minnesota, Drew Stafford scored 46 seconds into overtime for Buffalo, picking up the puck at the Minnesota blue line, going around Brent Burns and tucking the puck under goalie Jose Theodore’s leg.
Jason Pominville and Rob Niedermayer also scored to help Buffalo move into eighth place in the Eastern Conference, a point ahead of Carolina for the final playoff spot.
The Sabres are 6-0-1 in their last seven road games, the first time they’ve earned points in seven straight road games since opening the 2006-07 season by winning an NHL-record 10 straight away from home.
Devils 3 Islanders 2, SO: In Uniondale, New York, Brian Rolston scored in the sixth round of the shootout to give surging New Jersey its 20th victory in 24 games (20-2-2).
Blake Comeau tied it for New York with 3:42 left in regulation, firing a loose puck from the low slot past Martin Brodeur for his 18th goal this season.
Ilya Kovalchuk , who also scored in the shootout, broke a 1-1 tie with a goal at 2:52 of the final period when he moved in and beat Al Montoya over his glove with a high wrist shot.
Rolston also scored for the Devils in regulation, and Brodeur stopped 20 shots.
Josh Bailey added a goal for the Islanders.
