The win triggered a wild on-ice celebration by the Islanders, who were seemingly out of the Stanley Cup hunt one week ago. They regrouped in front of third-string goalie Wade Dubielewicz to edge the Toronto Maple Leafs for the last playoff berth.
Toronto finished its season Saturday night with a 6-5 win over the Montreal Canadiens. The Maple Leafs had 91 points, one more than the Islanders.
Despite squandering a 2-0 lead, the Islanders regrouped to beat the Devils in the shootout. Miroslav Satan and Viktor Kozlov, the first two shooters, scored for New York, and Dubielewicz made poke saves on Brian Gionta and Sergei Brylin to send the Islanders into the postseason.
Dubielewicz, playing in only his 17th NHL game, improved his record to 4-1 since being called up from the minors on March 27. The Islanders turned to him out of desperation when Mike Dunham struggled after replacing Rick DiPietro, who was sidelined for the final seven games with a concussion.
DALLAS - Mike Modano scored his 507th career goal with 3:49 left to extend his record for U.S.-born players.
With the game even at 2 and the teams 4-on-4, Modano skated to the net along the right side and beat Blackhawks goalie Nikolai Khabibulin after a centering pass from Philippe Boucher for Modano's 22nd goal of the season.
Dallas went 12-2-2 in its final 16 games to finish with 107 points and wrap up the sixth Western Conference playoff seed. The Sharks won the tiebreaker over the Stars to earn the fifth seed.
PHILADELPHIA - The Flyers ended their worst season in 40 years by denying NHL-best Buffalo a chance to finish with the highest point total in its history.
Mike Knuble and Mike Richards scored third-period goals for Philadelphia.
Still, the top-seeded Sabres head into the postseason with the best record in the NHL and home- ice advantage throughout the Stanley Cup playoffs. They will open against the Islanders.
GLENDALE, Ariz. - Derek Morris scored the go-ahead goal three seconds into a power play at 12:12 of the first period to lift Phoenix. Jeremy Roenick added what might be his final NHL goal, an empty-netter, with 21.2 seconds to play.
Roenick, whose goal was his 11th of the season, said he will decide this summer whether to retire from the game.
Vancouver clinched the Northwest Division title with a victory at San Jose on Saturday. The Canucks, who set franchise records for wins and points, start the playoffs at home against Dallas on Wednesday.