RALEIGH, N.C. (AP) — Matthew Tkachuk beat Frederik Andersen in the final seconds of the fourth overtime to give the Florida Panthers a 3-2 victory over the Carolina Hurricanes early Friday in Game 1 of the Eastern Conference final.

Tkachuck took a feed from Sam Bennett after Florida won a battle for the puck as Carolina tried to clear the puck, then whipped a shot from the right circle past Andersen with 12.7 seconds left.

That sent Tkachuck racing toward center ice to celebrate with teammates in what turned into the longest game in either franchises' history, as well as the sixth-longest game in NHL history.

Florida won its seventh straight road game in these playoffs and improved to 5-0 in overtime. Game 2 is Saturday night in Raleigh.

Aleksander Barkov and Carter Verhaeghe scored in regulation for the Panthers, and Sergei Bobrovsky made 63 saves in what turned into a goaltender battle as the game got more ragged and players racked up the ice time.

Andersen finished with 57 saves for Carolina, which got power-play goals from Seth Jarvis and Stefan Noesen.

Tkachuk finally ended a game that had multiple wild sequences in critical late moments.

Most notably, there was Ryan Lomberg appearing to have the winning goal in his return to Florida’s lineup from injury, beating Jalen Chatfield in a battle and then whipping the puck by Andrersen 2 1/2 minutes into the first OT.

But Carolina successfully challenged the play for goaltender interference. Replays showed Florida’s Colin White — while being bumped by Carolina’s Jack Drury — making skate-to-skate contact with Andersen, then bumping him as Andersen ended up on all fours on the other side of the crease before Lomberg’s shot found the net.

Later in that first OT, Jarvis — who had the game’s first goal on a power-play blast from the slot — nearly ended it on a loose rebound but rang the crossbar.

It turned out, the game was nowhere near its epic finish.

Florida hadn’t been to an Eastern Conference final since 1996, before a large chunk of its roster had even been born. But these Panthers had turned a late surge to qualify for the final wild-card spot into a postseason-shaking moment by taking down Boston following the Bruins’ record-setting 65 wins and 135 points, followed by beating a Toronto team buzzing off its first series win in nearly two decades.

Now the Panthers have handed the Hurricanes — who had the league's second-best regular-season record — their first series deficit of the postseason.

Carolina is in the Eastern final for the second time in five years. The last time, it was a feel-good surprise for a young core that had just ended a nine-year postseason drought. They had since accomplished the goal of building a consistent winner and Cup contender, though second-round exits the past two seasons on home ice had cast a damper on some of that sustained success.

This time, Carolina beat the New York Islanders in six games and then the New Jersey Devils in five to make it back. But on a night when both teams had plenty of chances to end this one in any of the OTs, Carolina ended up losing its ninth straight game in the conference-final round dating to 2009.

LONGEST GAME

The longest game in NHL history came on March 24, 1936, when the Detroit Red Wings beat the Montreal Maroons 1-0 in the sixth overtime on Mud Bruneteau’s goal at 116 minutes, 30 seconds of extra play.

FRANCHISE MARKS

Florida’s previous record for longest game was 104:31 in Game 4 of the 1996 Stanley Cup final against Colorado. Carolina’s previous record was 114:47 for Game 3 of the 2002 Stanley Cup final. The teams each lost those games.

WELCOME BACK

Both teams welcomed back forwards from lengthy injuries.

Carolina’s Teuvo Teravainen hadn’t played since suffering what the team described as a hand injury in Game 2 of the first-round series against the New York Islanders. The injury required surgery on April 20 and left him with a scar running the length of his left thumb.

Lomberg had missed eight straight games due to an upper-body injury.

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Follow Aaron Beard on Twitter at http://www.twitter.com/aaronbeardap

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AP NHL Playoffs: https://apnews.com/hub/stanley-cup and https://twitter.com/AP_Sports