Daniel Alfredsson scored his 400th career goal at 3:31 of overtime to give the Ottawa Senators a come-from-behind 4-3 win over the Calgary Flames on Friday night.
Alfredsson drove a slap shot from the left point past Leland Irving on a power play after Calgary was left short-handed when Rene Bourque was called for holding 2:20 into the extra period.
Erik Karlsson, who assisted on Alfredsson's milestone goal, tied it at 3 with an unassisted effort 4:28 into the third as Ottawa battled back from an early 3-0 deficit.
Karlsson picked up his own rebound and circled behind the net with a delayed penalty signaled against Calgary. The smooth-skating defenseman came out the other side to score his fifth goal.
Nick Foligno and Zack Smith scored in the second period for the Senators.
Bourque, Curtis Glencross and Chris Butler scored first-period goals to give the Flames a 3-0 lead.
Senators backup Alex Auld allowed three goals on 15 shots in his sixth start.
Craig Anderson took over to start the second and got his 16th win in relief. He stopped each of the 17 shots he faced.
Leland Irving made 45 saves in his third NHL start for Calgary, which ended a four-game winning streak one night earlier with a road loss to the New York Islanders.
Jarome Iginla failed to score for a second game in a row. The Calgary captain remains two goals shy of becoming the 42nd member of the league's 500-goal club.
Foligno drew the Senators within 3-1 early in the second. The Senators' left wing crashed the goal to scored his 11th goal 3:34 into the middle period on a scoring play that was upheld by a video review.
Smith cut the deficit to 3-2 with his 11th at 12:01.
Irving kept his right pad extended along the ice to prevent Kyle Turris from stuffing in a rebound moments later.
Jay Bouwmeester had a scoring chance early in the third that could have put Calgary ahead by two, but the defenseman's stick broke as he shot.
Bourque got credit for his 12th goal as Calgary took a 1-0 lead on an odd scoring play 23 seconds in. Auld played the puck behind his net and sent it past Senators defenseman Sergei Gonchar. Bourque cut it off along the boards and his shot from the left corner struck Turris' skate on its way through Auld.
Glencross made it 2-0 with his team-leading 15th goal on a power play at 6:25.
Butler increased the lead to 3-0 at 18:49 with his first goal in 39 games with the Flames.
Notes: Butler has six goals in 194 regular season games. He was acquired from Buffalo along with C Paul Byron in the June 25 trade that sent Robyn Regehr, Ales Kotalik and a second-round draft pick in 2012 to the Sabres. ... The Flames are in the midst of a seven-game road trip as Calgary hosts the world junior hockey championship. ... The crowd of 20,500 was the Senators' 11th sellout in 20 games at Scotiabank Place.