Brian Campbell, Michael Frolik, Dave Bolland and Marian Hossa also scored for surging defending Stanley Cup champion Chicago.

Rene Bourque scored twice and Jarome Iginla connected once in the third period for the Flames, who fell short in trying to come back from a 4-1 deficit. Alex Tanguay added a goal and an assist for Calgary, which lost in regulation for only the second time in its last eight games.

Blackhawks rookie Corey Crawford made 21 saves in his ninth straight start.

At Anaheim, Calgary, Bobby Ryan scored from a penalty shot at 2:50 of overtime as Anaheim snapped Detroit's five-game road winning streak with a wild victory.

Ryan was hauled down on a breakaway moments after the Ducks killed off a penalty, and the American goal-scorer put a quick shot past Jimmy Howard's glove for his 30th goal of the season.

Dan Ellis made 28 saves for the Ducks, who have won two straight after a five-game skid threatened their playoff chances. Jason Blake had a third-period goal for Anaheim.

Pavel Datsyuk scored a second-period power-play goal, and Howard made 26 saves for Detroit.

At Toronto, Mikhail Grabovski scored 42 seconds into overtime to give Toronto a victory over Pittsburgh.

Grabovski took a nice pass from Phil Kessel, who tied it in the third period, and stuffed a shot behind Marc-Andre Fleury.

Nikolai Kulemin also scored for the Maple Leafs.

Matt Niskanen and Chris Conner scored for Pittsburgh.

At Newark, New Jersey, Ilya Kovalchuk scored his fifth winning goal in the last 11 games as New Jersey continued its amazing playoff push with a victory over Tampa Bay.

Martin Brodeur had 15 saves and Henrik Tallinder also scored as the Devils won for the 18th time in 22 games.

Dominic Moore scored for Tampa Bay, which had a three-game winning streak snapped.

At Uniondale, New York, Blake Comeau scored two goals and Al Montoya made 33 saves in non-taxing fashion to help New York beat sluggish Minnesota.

Comeau, who had gone seven games without scoring, gave the Islanders a 1-0 lead in the first period and a 3-0 edge in the second. Kyle Okposo and Andrew MacDonald added goals for New York.

Niklas Backstrom lasted only until 41 seconds into the second period. He was yanked in favor of Jose Theodore after giving up three goals on 19 shots.

John Madden spoiled Montoya's shutout bid with 8:27 left.