Stastny set up the tying goal, then scored the overtime winner -- both on the man-advantage -- as the Avalanche came from behind for a 3-2 victory Tuesday night. Colorado entered with the NHL's worst power play, but scored the tying and winning goals with the extra man after going 0-for-3 to start the game.
"Obviously, that's a huge win for us," Colorado captain Joe Sakic said. "We're down one going into the third and a great comeback. We needed the two points and hopefully we can build on this."
"He saw me and he made a good play and I tapped her in," Stastny said. "It's always big, especially when you are down a goal in the third. We've got to enjoy this one and be ready because we play Vancouver tomorrow."
The goal came after Jarome Iginla was penalized in overtime for tripping John-Michael Liles as he skated through center ice, a call that was emphatically disputed by coach Mike Keenan and booed by the sellout crowd of 19,289.
"I definitely didn't agree with the call there," Iginla said. "But I know I shouldn't have made it that close in OT to let the ref have any kind of say, so I feel bad about that."
Colorado had tied it at 2 at 13:33 of the third period when Milan Hejduk wristed a shot inside the far post from the faceoff dot after taking a drop pass from Stastny.
Until that point, it appeared Colorado's power play would fizzle again. Colorado entered on a 1-for-31 power-play skid, and then Robyn Regehr scored short-handed at 12:58 of the second period to give the Flames a 2-1 lead.
Smyth scored the other goal for Colorado, which won for just the second time in their eight games and moved into ninth spot in the Western Conference -- just two points back of a playoff spot.
Dustin Boyd also scored for Calgary, which opened a two-point lead in the Northwest Division over second-place Minnesota.
Colorado was one of the busiest teams in the 24 hours leading up to Tuesday's trade deadline, signing free agent Peter Forsberg on Monday and then acquiring defensemen Adam Foote and Ruslan Salei on Tuesday.
Foote was in the lineup, though he didn't appear on the bench until six minutes left in the first period, as his flight from Columbus arrived late.
Regehr's first career short-handed goal came on a slap shot from the blue-line that first changed directions off Foote's stick in the slot then caromed off the skate of unsuspecting Avalanche defenseman Scott Hannan at the side of the net and trickled past goaltender Jose Theodore.
Theodore made 26 saves for the Avalanche, while Kiprusoff had 31.
Calgary tied it at 1 at 15:35 of the first period on Boyd's sixth goal of the season coming 1 second after a Flames power play had expired. Owen Nolan set up the goal with a superb pass from the side boards threading a pass through the goal crease to an uncovered Boyd who one-timed a shot past Theodore.
Colorado opened the scoring when Smyth broke down his off wing and flicked a backhand shot toward the net from 30 feet that seemed to fool Kiprusoff deflecting off his glove and into the top corner.
Colorado had just five healthy defenseman, without Foote. He left Columbus early in the afternoon on a flight to Calgary, but didn't arrive on the bench until six minutes left in the first period. ... Calgary LW Alex Tanguay (neck) didn't play. ... After scoring 20 goals in his first 43 games, Calgary LW Kristian Huselius has just one in his last 21.