Marian Hossa scored the tying goal with 2.3 seconds left in the third, Patrick Kane added a goal in regulation then had the shootout winner and the Chicago Blackhawks earned a 3-2 win over the Calgary Flames on Saturday night.
Ray Emery had 45 saves for Chicago (7-0-2), which stayed unbeaten in regulation.
Scoreless after two periods, Calgary outshot Chicago 24-6 in the third period and looked as if it was going to hand the Blackhawks their first regulation defeat when Jay Bouwmeester scored with 35 seconds remaining to put the Flames ahead 2-1.
However, Chicago pulled Emery for an extra skater and, in a scramble around the Flames net in the final seconds, Hossa pounced on the puck and fired it over a fallen Miikka Kiprusoff to send the game into overtime.
Kane scored in the shootout on a backhand — after misses from Calgary's Alex Tanguay and Jiri Hudler — put the game in the hands of Emery, who denied rookie Roman Cervenka to win it for the Blackhawks.
The Blackhawks have gone to a shootout in each of their first three games of a season-high six-game road trip, but Saturday night was the first time they ended up with the win.
Dennis Wideman and Bouwmeester scored for Calgary (1-3-2). The Flames have a three-game road trip beginning Tuesday in Detroit.
Calgary had its best period of the season in the third as it outshot Chicago 24-6. Curtis Glencross had five shots in the final period as well as several other good chances.
In the opening minutes of the third, he sent a shot off the post on a breakaway.
Later, Lee Stempniak's rebound popped out to him at the side of the net and Glencross, with an empty net, shoveled the puck off the side of the net.
Then on the other side of the net, he was stopped three times in a row as he couldn't get the puck over Emery's outstretched pad.
Chicago opened the scoring at 4:08 of the third. Patrick Sharp wheeled out of the corner and put a shot off the post behind Kiprusoff, but the rebound kicked into the slot where it was fired in by Kane who just squeezed it under the Flames goaltender.
Calgary tied it on Wideman's power-play goal at 13:23.
Flames coach Bob Hartley tinkered with his top two lines, moving Mike Cammalleri onto the top unit with Jarome Iginla and Tanguay and dropping Glencross onto the line with Mikael Backlund and Stempniak.
Kiprusoff made his sixth straight start after the 36-year-old gave up an uncharacteristic 19 goals in his first five, which left him with a 3.76 goals-against average and .854 save percentage.
Emery got his second start for Chicago after giving up four goals on 25 shots in his first outing.
Each team had breakaways in the second period, but neither Jarome Iginla nor Hossa could take advantage.
Hossa's chance came in the second minute of the period when his slap shot was partially stopped by Kiprusoff who was backed up by Wideman, who was on the goal line to tuck the puck back under the Flames goaltender as it trickled toward the goal.
Later in the second, Hossa got too fancy with the puck in the neutral zone and lost it to Bouwmeester, whose pass sent Iginla in alone only to be denied by Emery.
Notes: Tanguay had his 500th career assist. ... Going back to last season, Iginla has gone nine games without a goal and has just one in his past 17 games ... Chicago C Dave Bolland (lower body) did not play after getting hurt Friday in Vancouver. ... Calgary D Cory Sarich was a healthy scratch for the first time. ... The game's only fight featured Tim Jackman and Brandon Bollig in the first period. The Flames entered the night as the only NHL team without a fight.